I am done

rl/Lib/site-packages/setuptools/tests/__init__.py

@@ -0,0 +1,13 @@
+import locale
+import sys
+
+import pytest
+
+__all__ = ['fail_on_ascii']
+
+if sys.version_info >= (3, 11):
+    locale_encoding = locale.getencoding()
+else:
+    locale_encoding = locale.getpreferredencoding(False)
+is_ascii = locale_encoding == 'ANSI_X3.4-1968'
+fail_on_ascii = pytest.mark.xfail(is_ascii, reason="Test fails in this locale")

rl/Lib/site-packages/setuptools/tests/compat/py39.py

@@ -0,0 +1,3 @@
+from jaraco.test.cpython import from_test_support, try_import
+
+os_helper = try_import('os_helper') or from_test_support('can_symlink')

rl/Lib/site-packages/setuptools/tests/config/downloads/__init__.py

@@ -0,0 +1,57 @@
+import re
+import time
+from pathlib import Path
+from urllib.error import HTTPError
+from urllib.request import urlopen
+
+__all__ = ["DOWNLOAD_DIR", "retrieve_file", "output_file", "urls_from_file"]
+
+
+NAME_REMOVE = ("http://", "https://", "github.com/", "/raw/")
+DOWNLOAD_DIR = Path(__file__).parent
+
+
+# ----------------------------------------------------------------------
+# Please update ./preload.py accordingly when modifying this file
+# ----------------------------------------------------------------------
+
+
+def output_file(url: str, download_dir: Path = DOWNLOAD_DIR):
+    file_name = url.strip()
+    for part in NAME_REMOVE:
+        file_name = file_name.replace(part, '').strip().strip('/:').strip()
+    return Path(download_dir, re.sub(r"[^\-_\.\w\d]+", "_", file_name))
+
+
+def retrieve_file(url: str, download_dir: Path = DOWNLOAD_DIR, wait: float = 5):
+    path = output_file(url, download_dir)
+    if path.exists():
+        print(f"Skipping {url} (already exists: {path})")
+    else:
+        download_dir.mkdir(exist_ok=True, parents=True)
+        print(f"Downloading {url} to {path}")
+        try:
+            download(url, path)
+        except HTTPError:
+            time.sleep(wait)  # wait a few seconds and try again.
+            download(url, path)
+    return path
+
+
+def urls_from_file(list_file: Path):
+    """``list_file`` should be a text file where each line corresponds to a URL to
+    download.
+    """
+    print(f"file: {list_file}")
+    content = list_file.read_text(encoding="utf-8")
+    return [url for url in content.splitlines() if not url.startswith("#")]
+
+
+def download(url: str, dest: Path):
+    with urlopen(url) as f:
+        data = f.read()
+
+    with open(dest, "wb") as f:
+        f.write(data)
+
+    assert Path(dest).exists()

rl/Lib/site-packages/setuptools/tests/config/downloads/preload.py

@@ -0,0 +1,18 @@
+"""This file can be used to preload files needed for testing.
+
+For example you can use::
+
+    cd setuptools/tests/config
+    python -m downloads.preload setupcfg_examples.txt
+
+to make sure the `setup.cfg` examples are downloaded before starting the tests.
+"""
+
+import sys
+from pathlib import Path
+
+from . import retrieve_file, urls_from_file
+
+if __name__ == "__main__":
+    urls = urls_from_file(Path(sys.argv[1]))
+    list(map(retrieve_file, urls))

rl/Lib/site-packages/setuptools/tests/config/setupcfg_examples.txt

@@ -0,0 +1,22 @@
+# ====================================================================
+# Some popular packages that use setup.cfg (and others not so popular)
+# Reference: https://hugovk.github.io/top-pypi-packages/
+# ====================================================================
+https://github.com/pypa/setuptools/raw/52c990172fec37766b3566679724aa8bf70ae06d/setup.cfg
+https://github.com/pypa/wheel/raw/0acd203cd896afec7f715aa2ff5980a403459a3b/setup.cfg
+https://github.com/python/importlib_metadata/raw/2f05392ca980952a6960d82b2f2d2ea10aa53239/setup.cfg
+https://github.com/jaraco/skeleton/raw/d9008b5c510cd6969127a6a2ab6f832edddef296/setup.cfg
+https://github.com/jaraco/zipp/raw/700d3a96390e970b6b962823bfea78b4f7e1c537/setup.cfg
+https://github.com/pallets/jinja/raw/7d72eb7fefb7dce065193967f31f805180508448/setup.cfg
+https://github.com/tkem/cachetools/raw/2fd87a94b8d3861d80e9e4236cd480bfdd21c90d/setup.cfg
+https://github.com/aio-libs/aiohttp/raw/5e0e6b7080f2408d5f1dd544c0e1cf88378b7b10/setup.cfg
+https://github.com/pallets/flask/raw/9486b6cf57bd6a8a261f67091aca8ca78eeec1e3/setup.cfg
+https://github.com/pallets/click/raw/6411f425fae545f42795665af4162006b36c5e4a/setup.cfg
+https://github.com/sqlalchemy/sqlalchemy/raw/533f5718904b620be8d63f2474229945d6f8ba5d/setup.cfg
+https://github.com/pytest-dev/pluggy/raw/461ef63291d13589c4e21aa182cd1529257e9a0a/setup.cfg
+https://github.com/pytest-dev/pytest/raw/c7be96dae487edbd2f55b561b31b68afac1dabe6/setup.cfg
+https://github.com/platformdirs/platformdirs/raw/7b7852128dd6f07511b618d6edea35046bd0c6ff/setup.cfg
+https://github.com/pandas-dev/pandas/raw/bc17343f934a33dc231c8c74be95d8365537c376/setup.cfg
+https://github.com/django/django/raw/4e249d11a6e56ca8feb4b055b681cec457ef3a3d/setup.cfg
+https://github.com/pyscaffold/pyscaffold/raw/de7aa5dc059fbd04307419c667cc4961bc9df4b8/setup.cfg
+https://github.com/pypa/virtualenv/raw/f92eda6e3da26a4d28c2663ffb85c4960bdb990c/setup.cfg

rl/Lib/site-packages/setuptools/tests/config/test_apply_pyprojecttoml.py

@@ -0,0 +1,511 @@
+"""Make sure that applying the configuration from pyproject.toml is equivalent to
+applying a similar configuration from setup.cfg
+
+To run these tests offline, please have a look on ``./downloads/preload.py``
+"""
+
+from __future__ import annotations
+
+import io
+import re
+import tarfile
+from inspect import cleandoc
+from pathlib import Path
+from unittest.mock import Mock
+
+import pytest
+from ini2toml.api import LiteTranslator
+from packaging.metadata import Metadata
+
+import setuptools  # noqa ensure monkey patch to metadata
+from setuptools.command.egg_info import write_requirements
+from setuptools.config import expand, pyprojecttoml, setupcfg
+from setuptools.config._apply_pyprojecttoml import _MissingDynamic, _some_attrgetter
+from setuptools.dist import Distribution
+from setuptools.errors import RemovedConfigError
+
+from .downloads import retrieve_file, urls_from_file
+
+HERE = Path(__file__).parent
+EXAMPLES_FILE = "setupcfg_examples.txt"
+
+
+def makedist(path, **attrs):
+    return Distribution({"src_root": path, **attrs})
+
+
+@pytest.mark.parametrize("url", urls_from_file(HERE / EXAMPLES_FILE))
+@pytest.mark.filterwarnings("ignore")
+@pytest.mark.uses_network
+def test_apply_pyproject_equivalent_to_setupcfg(url, monkeypatch, tmp_path):
+    monkeypatch.setattr(expand, "read_attr", Mock(return_value="0.0.1"))
+    setupcfg_example = retrieve_file(url)
+    pyproject_example = Path(tmp_path, "pyproject.toml")
+    setupcfg_text = setupcfg_example.read_text(encoding="utf-8")
+    toml_config = LiteTranslator().translate(setupcfg_text, "setup.cfg")
+    pyproject_example.write_text(toml_config, encoding="utf-8")
+
+    dist_toml = pyprojecttoml.apply_configuration(makedist(tmp_path), pyproject_example)
+    dist_cfg = setupcfg.apply_configuration(makedist(tmp_path), setupcfg_example)
+
+    pkg_info_toml = core_metadata(dist_toml)
+    pkg_info_cfg = core_metadata(dist_cfg)
+    assert pkg_info_toml == pkg_info_cfg
+
+    if any(getattr(d, "license_files", None) for d in (dist_toml, dist_cfg)):
+        assert set(dist_toml.license_files) == set(dist_cfg.license_files)
+
+    if any(getattr(d, "entry_points", None) for d in (dist_toml, dist_cfg)):
+        print(dist_cfg.entry_points)
+        ep_toml = {
+            (k, *sorted(i.replace(" ", "") for i in v))
+            for k, v in dist_toml.entry_points.items()
+        }
+        ep_cfg = {
+            (k, *sorted(i.replace(" ", "") for i in v))
+            for k, v in dist_cfg.entry_points.items()
+        }
+        assert ep_toml == ep_cfg
+
+    if any(getattr(d, "package_data", None) for d in (dist_toml, dist_cfg)):
+        pkg_data_toml = {(k, *sorted(v)) for k, v in dist_toml.package_data.items()}
+        pkg_data_cfg = {(k, *sorted(v)) for k, v in dist_cfg.package_data.items()}
+        assert pkg_data_toml == pkg_data_cfg
+
+    if any(getattr(d, "data_files", None) for d in (dist_toml, dist_cfg)):
+        data_files_toml = {(k, *sorted(v)) for k, v in dist_toml.data_files}
+        data_files_cfg = {(k, *sorted(v)) for k, v in dist_cfg.data_files}
+        assert data_files_toml == data_files_cfg
+
+    assert set(dist_toml.install_requires) == set(dist_cfg.install_requires)
+    if any(getattr(d, "extras_require", None) for d in (dist_toml, dist_cfg)):
+        extra_req_toml = {(k, *sorted(v)) for k, v in dist_toml.extras_require.items()}
+        extra_req_cfg = {(k, *sorted(v)) for k, v in dist_cfg.extras_require.items()}
+        assert extra_req_toml == extra_req_cfg
+
+
+PEP621_EXAMPLE = """\
+[project]
+name = "spam"
+version = "2020.0.0"
+description = "Lovely Spam! Wonderful Spam!"
+readme = "README.rst"
+requires-python = ">=3.8"
+license = {file = "LICENSE.txt"}
+keywords = ["egg", "bacon", "sausage", "tomatoes", "Lobster Thermidor"]
+authors = [
+  {email = "hi@pradyunsg.me"},
+  {name = "Tzu-Ping Chung"}
+]
+maintainers = [
+  {name = "Brett Cannon", email = "brett@python.org"},
+  {name = "John X. Ãørçeč", email = "john@utf8.org"},
+  {name = "Γαμα קּ 東", email = "gama@utf8.org"},
+]
+classifiers = [
+  "Development Status :: 4 - Beta",
+  "Programming Language :: Python"
+]
+
+dependencies = [
+  "httpx",
+  "gidgethub[httpx]>4.0.0",
+  "django>2.1; os_name != 'nt'",
+  "django>2.0; os_name == 'nt'"
+]
+
+[project.optional-dependencies]
+test = [
+  "pytest < 5.0.0",
+  "pytest-cov[all]"
+]
+
+[project.urls]
+homepage = "http://example.com"
+documentation = "http://readthedocs.org"
+repository = "http://github.com"
+changelog = "http://github.com/me/spam/blob/master/CHANGELOG.md"
+
+[project.scripts]
+spam-cli = "spam:main_cli"
+
+[project.gui-scripts]
+spam-gui = "spam:main_gui"
+
+[project.entry-points."spam.magical"]
+tomatoes = "spam:main_tomatoes"
+"""
+
+PEP621_INTERNATIONAL_EMAIL_EXAMPLE = """\
+[project]
+name = "spam"
+version = "2020.0.0"
+authors = [
+  {email = "hi@pradyunsg.me"},
+  {name = "Tzu-Ping Chung"}
+]
+maintainers = [
+  {name = "Степан Бандера", email = "криївка@оун-упа.укр"},
+]
+"""
+
+PEP621_EXAMPLE_SCRIPT = """
+def main_cli(): pass
+def main_gui(): pass
+def main_tomatoes(): pass
+"""
+
+
+def _pep621_example_project(
+    tmp_path,
+    readme="README.rst",
+    pyproject_text=PEP621_EXAMPLE,
+):
+    pyproject = tmp_path / "pyproject.toml"
+    text = pyproject_text
+    replacements = {'readme = "README.rst"': f'readme = "{readme}"'}
+    for orig, subst in replacements.items():
+        text = text.replace(orig, subst)
+    pyproject.write_text(text, encoding="utf-8")
+
+    (tmp_path / readme).write_text("hello world", encoding="utf-8")
+    (tmp_path / "LICENSE.txt").write_text("--- LICENSE stub ---", encoding="utf-8")
+    (tmp_path / "spam.py").write_text(PEP621_EXAMPLE_SCRIPT, encoding="utf-8")
+    return pyproject
+
+
+def test_pep621_example(tmp_path):
+    """Make sure the example in PEP 621 works"""
+    pyproject = _pep621_example_project(tmp_path)
+    dist = pyprojecttoml.apply_configuration(makedist(tmp_path), pyproject)
+    assert dist.metadata.license == "--- LICENSE stub ---"
+    assert set(dist.metadata.license_files) == {"LICENSE.txt"}
+
+
+@pytest.mark.parametrize(
+    "readme, ctype",
+    [
+        ("Readme.txt", "text/plain"),
+        ("readme.md", "text/markdown"),
+        ("text.rst", "text/x-rst"),
+    ],
+)
+def test_readme_content_type(tmp_path, readme, ctype):
+    pyproject = _pep621_example_project(tmp_path, readme)
+    dist = pyprojecttoml.apply_configuration(makedist(tmp_path), pyproject)
+    assert dist.metadata.long_description_content_type == ctype
+
+
+def test_undefined_content_type(tmp_path):
+    pyproject = _pep621_example_project(tmp_path, "README.tex")
+    with pytest.raises(ValueError, match="Undefined content type for README.tex"):
+        pyprojecttoml.apply_configuration(makedist(tmp_path), pyproject)
+
+
+def test_no_explicit_content_type_for_missing_extension(tmp_path):
+    pyproject = _pep621_example_project(tmp_path, "README")
+    dist = pyprojecttoml.apply_configuration(makedist(tmp_path), pyproject)
+    assert dist.metadata.long_description_content_type is None
+
+
+@pytest.mark.parametrize(
+    ('pyproject_text', 'expected_maintainers_meta_value'),
+    (
+        pytest.param(
+            PEP621_EXAMPLE,
+            (
+                'Brett Cannon <brett@python.org>, "John X. Ãørçeč" <john@utf8.org>, '
+                'Γαμα קּ 東 <gama@utf8.org>'
+            ),
+            id='non-international-emails',
+        ),
+        pytest.param(
+            PEP621_INTERNATIONAL_EMAIL_EXAMPLE,
+            'Степан Бандера <криївка@оун-упа.укр>',
+            marks=pytest.mark.xfail(
+                reason="CPython's `email.headerregistry.Address` only supports "
+                'RFC 5322, as of Nov 10, 2022 and latest Python 3.11.0',
+                strict=True,
+            ),
+            id='international-email',
+        ),
+    ),
+)
+def test_utf8_maintainer_in_metadata(  # issue-3663
+    expected_maintainers_meta_value,
+    pyproject_text,
+    tmp_path,
+):
+    pyproject = _pep621_example_project(
+        tmp_path,
+        "README",
+        pyproject_text=pyproject_text,
+    )
+    dist = pyprojecttoml.apply_configuration(makedist(tmp_path), pyproject)
+    assert dist.metadata.maintainer_email == expected_maintainers_meta_value
+    pkg_file = tmp_path / "PKG-FILE"
+    with open(pkg_file, "w", encoding="utf-8") as fh:
+        dist.metadata.write_pkg_file(fh)
+    content = pkg_file.read_text(encoding="utf-8")
+    assert f"Maintainer-email: {expected_maintainers_meta_value}" in content
+
+
+class TestLicenseFiles:
+    # TODO: After PEP 639 is accepted, we have to move the license-files
+    #       to the `project` table instead of `tool.setuptools`
+
+    def base_pyproject(self, tmp_path, additional_text):
+        pyproject = _pep621_example_project(tmp_path, "README")
+        text = pyproject.read_text(encoding="utf-8")
+
+        # Sanity-check
+        assert 'license = {file = "LICENSE.txt"}' in text
+        assert "[tool.setuptools]" not in text
+
+        text = f"{text}\n{additional_text}\n"
+        pyproject.write_text(text, encoding="utf-8")
+        return pyproject
+
+    def test_both_license_and_license_files_defined(self, tmp_path):
+        setuptools_config = '[tool.setuptools]\nlicense-files = ["_FILE*"]'
+        pyproject = self.base_pyproject(tmp_path, setuptools_config)
+
+        (tmp_path / "_FILE.txt").touch()
+        (tmp_path / "_FILE.rst").touch()
+
+        # Would normally match the `license_files` patterns, but we want to exclude it
+        # by being explicit. On the other hand, contents should be added to `license`
+        license = tmp_path / "LICENSE.txt"
+        license.write_text("LicenseRef-Proprietary\n", encoding="utf-8")
+
+        dist = pyprojecttoml.apply_configuration(makedist(tmp_path), pyproject)
+        assert set(dist.metadata.license_files) == {"_FILE.rst", "_FILE.txt"}
+        assert dist.metadata.license == "LicenseRef-Proprietary\n"
+
+    def test_default_patterns(self, tmp_path):
+        setuptools_config = '[tool.setuptools]\nzip-safe = false'
+        # ^ used just to trigger section validation
+        pyproject = self.base_pyproject(tmp_path, setuptools_config)
+
+        license_files = "LICENCE-a.html COPYING-abc.txt AUTHORS-xyz NOTICE,def".split()
+
+        for fname in license_files:
+            (tmp_path / fname).write_text(f"{fname}\n", encoding="utf-8")
+
+        dist = pyprojecttoml.apply_configuration(makedist(tmp_path), pyproject)
+        assert (tmp_path / "LICENSE.txt").exists()  # from base example
+        assert set(dist.metadata.license_files) == {*license_files, "LICENSE.txt"}
+
+
+class TestPyModules:
+    # https://github.com/pypa/setuptools/issues/4316
+
+    def dist(self, name):
+        toml_config = f"""
+        [project]
+        name = "test"
+        version = "42.0"
+        [tool.setuptools]
+        py-modules = [{name!r}]
+        """
+        pyproject = Path("pyproject.toml")
+        pyproject.write_text(cleandoc(toml_config), encoding="utf-8")
+        return pyprojecttoml.apply_configuration(Distribution({}), pyproject)
+
+    @pytest.mark.parametrize("module", ["pip-run", "abc-d.λ-xyz-e"])
+    def test_valid_module_name(self, tmp_path, monkeypatch, module):
+        monkeypatch.chdir(tmp_path)
+        assert module in self.dist(module).py_modules
+
+    @pytest.mark.parametrize("module", ["pip run", "-pip-run", "pip-run-stubs"])
+    def test_invalid_module_name(self, tmp_path, monkeypatch, module):
+        monkeypatch.chdir(tmp_path)
+        with pytest.raises(ValueError, match="py-modules"):
+            self.dist(module).py_modules
+
+
+class TestExtModules:
+    def test_pyproject_sets_attribute(self, tmp_path, monkeypatch):
+        monkeypatch.chdir(tmp_path)
+        pyproject = Path("pyproject.toml")
+        toml_config = """
+        [project]
+        name = "test"
+        version = "42.0"
+        [tool.setuptools]
+        ext-modules = [
+          {name = "my.ext", sources = ["hello.c", "world.c"]}
+        ]
+        """
+        pyproject.write_text(cleandoc(toml_config), encoding="utf-8")
+        with pytest.warns(pyprojecttoml._ExperimentalConfiguration):
+            dist = pyprojecttoml.apply_configuration(Distribution({}), pyproject)
+        assert len(dist.ext_modules) == 1
+        assert dist.ext_modules[0].name == "my.ext"
+        assert set(dist.ext_modules[0].sources) == {"hello.c", "world.c"}
+
+
+class TestDeprecatedFields:
+    def test_namespace_packages(self, tmp_path):
+        pyproject = tmp_path / "pyproject.toml"
+        config = """
+        [project]
+        name = "myproj"
+        version = "42"
+        [tool.setuptools]
+        namespace-packages = ["myproj.pkg"]
+        """
+        pyproject.write_text(cleandoc(config), encoding="utf-8")
+        with pytest.raises(RemovedConfigError, match="namespace-packages"):
+            pyprojecttoml.apply_configuration(makedist(tmp_path), pyproject)
+
+
+class TestPresetField:
+    def pyproject(self, tmp_path, dynamic, extra_content=""):
+        content = f"[project]\nname = 'proj'\ndynamic = {dynamic!r}\n"
+        if "version" not in dynamic:
+            content += "version = '42'\n"
+        file = tmp_path / "pyproject.toml"
+        file.write_text(content + extra_content, encoding="utf-8")
+        return file
+
+    @pytest.mark.parametrize(
+        "attr, field, value",
+        [
+            ("classifiers", "classifiers", ["Private :: Classifier"]),
+            ("entry_points", "scripts", {"console_scripts": ["foobar=foobar:main"]}),
+            ("entry_points", "gui-scripts", {"gui_scripts": ["bazquux=bazquux:main"]}),
+            pytest.param(
+                *("install_requires", "dependencies", ["six"]),
+                marks=[
+                    pytest.mark.filterwarnings("ignore:.*install_requires. overwritten")
+                ],
+            ),
+        ],
+    )
+    def test_not_listed_in_dynamic(self, tmp_path, attr, field, value):
+        """Setuptools cannot set a field if not listed in ``dynamic``"""
+        pyproject = self.pyproject(tmp_path, [])
+        dist = makedist(tmp_path, **{attr: value})
+        msg = re.compile(f"defined outside of `pyproject.toml`:.*{field}", re.S)
+        with pytest.warns(_MissingDynamic, match=msg):
+            dist = pyprojecttoml.apply_configuration(dist, pyproject)
+
+        dist_value = _some_attrgetter(f"metadata.{attr}", attr)(dist)
+        assert not dist_value
+
+    @pytest.mark.parametrize(
+        "attr, field, value",
+        [
+            ("install_requires", "dependencies", []),
+            ("extras_require", "optional-dependencies", {}),
+            ("install_requires", "dependencies", ["six"]),
+            ("classifiers", "classifiers", ["Private :: Classifier"]),
+        ],
+    )
+    def test_listed_in_dynamic(self, tmp_path, attr, field, value):
+        pyproject = self.pyproject(tmp_path, [field])
+        dist = makedist(tmp_path, **{attr: value})
+        dist = pyprojecttoml.apply_configuration(dist, pyproject)
+        dist_value = _some_attrgetter(f"metadata.{attr}", attr)(dist)
+        assert dist_value == value
+
+    def test_warning_overwritten_dependencies(self, tmp_path):
+        src = "[project]\nname='pkg'\nversion='0.1'\ndependencies=['click']\n"
+        pyproject = tmp_path / "pyproject.toml"
+        pyproject.write_text(src, encoding="utf-8")
+        dist = makedist(tmp_path, install_requires=["wheel"])
+        with pytest.warns(match="`install_requires` overwritten"):
+            dist = pyprojecttoml.apply_configuration(dist, pyproject)
+        assert "wheel" not in dist.install_requires
+
+    def test_optional_dependencies_dont_remove_env_markers(self, tmp_path):
+        """
+        Internally setuptools converts dependencies with markers to "extras".
+        If ``install_requires`` is given by ``setup.py``, we have to ensure that
+        applying ``optional-dependencies`` does not overwrite the mandatory
+        dependencies with markers (see #3204).
+        """
+        # If setuptools replace its internal mechanism that uses `requires.txt`
+        # this test has to be rewritten to adapt accordingly
+        extra = "\n[project.optional-dependencies]\nfoo = ['bar>1']\n"
+        pyproject = self.pyproject(tmp_path, ["dependencies"], extra)
+        install_req = ['importlib-resources (>=3.0.0) ; python_version < "3.7"']
+        dist = makedist(tmp_path, install_requires=install_req)
+        dist = pyprojecttoml.apply_configuration(dist, pyproject)
+        assert "foo" in dist.extras_require
+        egg_info = dist.get_command_obj("egg_info")
+        write_requirements(egg_info, tmp_path, tmp_path / "requires.txt")
+        reqs = (tmp_path / "requires.txt").read_text(encoding="utf-8")
+        assert "importlib-resources" in reqs
+        assert "bar" in reqs
+        assert ':python_version < "3.7"' in reqs
+
+    @pytest.mark.parametrize(
+        "field,group", [("scripts", "console_scripts"), ("gui-scripts", "gui_scripts")]
+    )
+    @pytest.mark.filterwarnings("error")
+    def test_scripts_dont_require_dynamic_entry_points(self, tmp_path, field, group):
+        # Issue 3862
+        pyproject = self.pyproject(tmp_path, [field])
+        dist = makedist(tmp_path, entry_points={group: ["foobar=foobar:main"]})
+        dist = pyprojecttoml.apply_configuration(dist, pyproject)
+        assert group in dist.entry_points
+
+
+class TestMeta:
+    def test_example_file_in_sdist(self, setuptools_sdist):
+        """Meta test to ensure tests can run from sdist"""
+        with tarfile.open(setuptools_sdist) as tar:
+            assert any(name.endswith(EXAMPLES_FILE) for name in tar.getnames())
+
+
+class TestInteropCommandLineParsing:
+    def test_version(self, tmp_path, monkeypatch, capsys):
+        # See pypa/setuptools#4047
+        # This test can be removed once the CLI interface of setup.py is removed
+        monkeypatch.chdir(tmp_path)
+        toml_config = """
+        [project]
+        name = "test"
+        version = "42.0"
+        """
+        pyproject = Path(tmp_path, "pyproject.toml")
+        pyproject.write_text(cleandoc(toml_config), encoding="utf-8")
+        opts = {"script_args": ["--version"]}
+        dist = pyprojecttoml.apply_configuration(Distribution(opts), pyproject)
+        dist.parse_command_line()  # <-- there should be no exception here.
+        captured = capsys.readouterr()
+        assert "42.0" in captured.out
+
+
+# --- Auxiliary Functions ---
+
+
+def core_metadata(dist) -> str:
+    with io.StringIO() as buffer:
+        dist.metadata.write_pkg_file(buffer)
+        pkg_file_txt = buffer.getvalue()
+
+    # Make sure core metadata is valid
+    Metadata.from_email(pkg_file_txt, validate=True)  # can raise exceptions
+
+    skip_prefixes: tuple[str, ...] = ()
+    skip_lines = set()
+    # ---- DIFF NORMALISATION ----
+    # PEP 621 is very particular about author/maintainer metadata conversion, so skip
+    skip_prefixes += ("Author:", "Author-email:", "Maintainer:", "Maintainer-email:")
+    # May be redundant with Home-page
+    skip_prefixes += ("Project-URL: Homepage,", "Home-page:")
+    # May be missing in original (relying on default) but backfilled in the TOML
+    skip_prefixes += ("Description-Content-Type:",)
+    # Remove empty lines
+    skip_lines.add("")
+
+    result = []
+    for line in pkg_file_txt.splitlines():
+        if line.startswith(skip_prefixes) or line in skip_lines:
+            continue
+        result.append(line + "\n")
+
+    return "".join(result)

rl/Lib/site-packages/setuptools/tests/config/test_expand.py

@@ -0,0 +1,221 @@
+import os
+import sys
+from pathlib import Path
+
+import pytest
+
+from setuptools.config import expand
+from setuptools.discovery import find_package_path
+
+from distutils.errors import DistutilsOptionError
+
+
+def write_files(files, root_dir):
+    for file, content in files.items():
+        path = root_dir / file
+        path.parent.mkdir(exist_ok=True, parents=True)
+        path.write_text(content, encoding="utf-8")
+
+
+def test_glob_relative(tmp_path, monkeypatch):
+    files = {
+        "dir1/dir2/dir3/file1.txt",
+        "dir1/dir2/file2.txt",
+        "dir1/file3.txt",
+        "a.ini",
+        "b.ini",
+        "dir1/c.ini",
+        "dir1/dir2/a.ini",
+    }
+
+    write_files({k: "" for k in files}, tmp_path)
+    patterns = ["**/*.txt", "[ab].*", "**/[ac].ini"]
+    monkeypatch.chdir(tmp_path)
+    assert set(expand.glob_relative(patterns)) == files
+    # Make sure the same APIs work outside cwd
+    assert set(expand.glob_relative(patterns, tmp_path)) == files
+
+
+def test_read_files(tmp_path, monkeypatch):
+    dir_ = tmp_path / "dir_"
+    (tmp_path / "_dir").mkdir(exist_ok=True)
+    (tmp_path / "a.txt").touch()
+    files = {"a.txt": "a", "dir1/b.txt": "b", "dir1/dir2/c.txt": "c"}
+    write_files(files, dir_)
+
+    secrets = Path(str(dir_) + "secrets")
+    secrets.mkdir(exist_ok=True)
+    write_files({"secrets.txt": "secret keys"}, secrets)
+
+    with monkeypatch.context() as m:
+        m.chdir(dir_)
+        assert expand.read_files(list(files)) == "a\nb\nc"
+
+        cannot_access_msg = r"Cannot access '.*\.\..a\.txt'"
+        with pytest.raises(DistutilsOptionError, match=cannot_access_msg):
+            expand.read_files(["../a.txt"])
+
+        cannot_access_secrets_msg = r"Cannot access '.*secrets\.txt'"
+        with pytest.raises(DistutilsOptionError, match=cannot_access_secrets_msg):
+            expand.read_files(["../dir_secrets/secrets.txt"])
+
+    # Make sure the same APIs work outside cwd
+    assert expand.read_files(list(files), dir_) == "a\nb\nc"
+    with pytest.raises(DistutilsOptionError, match=cannot_access_msg):
+        expand.read_files(["../a.txt"], dir_)
+
+
+class TestReadAttr:
+    @pytest.mark.parametrize(
+        "example",
+        [
+            # No cookie means UTF-8:
+            b"__version__ = '\xc3\xa9'\nraise SystemExit(1)\n",
+            # If a cookie is present, honor it:
+            b"# -*- coding: utf-8 -*-\n__version__ = '\xc3\xa9'\nraise SystemExit(1)\n",
+            b"# -*- coding: latin1 -*-\n__version__ = '\xe9'\nraise SystemExit(1)\n",
+        ],
+    )
+    def test_read_attr_encoding_cookie(self, example, tmp_path):
+        (tmp_path / "mod.py").write_bytes(example)
+        assert expand.read_attr('mod.__version__', root_dir=tmp_path) == 'é'
+
+    def test_read_attr(self, tmp_path, monkeypatch):
+        files = {
+            "pkg/__init__.py": "",
+            "pkg/sub/__init__.py": "VERSION = '0.1.1'",
+            "pkg/sub/mod.py": (
+                "VALUES = {'a': 0, 'b': {42}, 'c': (0, 1, 1)}\nraise SystemExit(1)"
+            ),
+        }
+        write_files(files, tmp_path)
+
+        with monkeypatch.context() as m:
+            m.chdir(tmp_path)
+            # Make sure it can read the attr statically without evaluating the module
+            assert expand.read_attr('pkg.sub.VERSION') == '0.1.1'
+            values = expand.read_attr('lib.mod.VALUES', {'lib': 'pkg/sub'})
+
+        assert values['a'] == 0
+        assert values['b'] == {42}
+
+        # Make sure the same APIs work outside cwd
+        assert expand.read_attr('pkg.sub.VERSION', root_dir=tmp_path) == '0.1.1'
+        values = expand.read_attr('lib.mod.VALUES', {'lib': 'pkg/sub'}, tmp_path)
+        assert values['c'] == (0, 1, 1)
+
+    @pytest.mark.parametrize(
+        "example",
+        [
+            "VERSION: str\nVERSION = '0.1.1'\nraise SystemExit(1)\n",
+            "VERSION: str = '0.1.1'\nraise SystemExit(1)\n",
+        ],
+    )
+    def test_read_annotated_attr(self, tmp_path, example):
+        files = {
+            "pkg/__init__.py": "",
+            "pkg/sub/__init__.py": example,
+        }
+        write_files(files, tmp_path)
+        # Make sure this attribute can be read statically
+        assert expand.read_attr('pkg.sub.VERSION', root_dir=tmp_path) == '0.1.1'
+
+    def test_import_order(self, tmp_path):
+        """
+        Sometimes the import machinery will import the parent package of a nested
+        module, which triggers side-effects and might create problems (see issue #3176)
+
+        ``read_attr`` should bypass these limitations by resolving modules statically
+        (via ast.literal_eval).
+        """
+        files = {
+            "src/pkg/__init__.py": "from .main import func\nfrom .about import version",
+            "src/pkg/main.py": "import super_complicated_dep\ndef func(): return 42",
+            "src/pkg/about.py": "version = '42'",
+        }
+        write_files(files, tmp_path)
+        attr_desc = "pkg.about.version"
+        package_dir = {"": "src"}
+        # `import super_complicated_dep` should not run, otherwise the build fails
+        assert expand.read_attr(attr_desc, package_dir, tmp_path) == "42"
+
+
+@pytest.mark.parametrize(
+    'package_dir, file, module, return_value',
+    [
+        ({"": "src"}, "src/pkg/main.py", "pkg.main", 42),
+        ({"pkg": "lib"}, "lib/main.py", "pkg.main", 13),
+        ({}, "single_module.py", "single_module", 70),
+        ({}, "flat_layout/pkg.py", "flat_layout.pkg", 836),
+    ],
+)
+def test_resolve_class(monkeypatch, tmp_path, package_dir, file, module, return_value):
+    monkeypatch.setattr(sys, "modules", {})  # reproducibility
+    files = {file: f"class Custom:\n    def testing(self): return {return_value}"}
+    write_files(files, tmp_path)
+    cls = expand.resolve_class(f"{module}.Custom", package_dir, tmp_path)
+    assert cls().testing() == return_value
+
+
+@pytest.mark.parametrize(
+    'args, pkgs',
+    [
+        ({"where": ["."], "namespaces": False}, {"pkg", "other"}),
+        ({"where": [".", "dir1"], "namespaces": False}, {"pkg", "other", "dir2"}),
+        ({"namespaces": True}, {"pkg", "other", "dir1", "dir1.dir2"}),
+        ({}, {"pkg", "other", "dir1", "dir1.dir2"}),  # default value for `namespaces`
+    ],
+)
+def test_find_packages(tmp_path, args, pkgs):
+    files = {
+        "pkg/__init__.py",
+        "other/__init__.py",
+        "dir1/dir2/__init__.py",
+    }
+    write_files({k: "" for k in files}, tmp_path)
+
+    package_dir = {}
+    kwargs = {"root_dir": tmp_path, "fill_package_dir": package_dir, **args}
+    where = kwargs.get("where", ["."])
+    assert set(expand.find_packages(**kwargs)) == pkgs
+    for pkg in pkgs:
+        pkg_path = find_package_path(pkg, package_dir, tmp_path)
+        assert os.path.exists(pkg_path)
+
+    # Make sure the same APIs work outside cwd
+    where = [
+        str((tmp_path / p).resolve()).replace(os.sep, "/")  # ensure posix-style paths
+        for p in args.pop("where", ["."])
+    ]
+
+    assert set(expand.find_packages(where=where, **args)) == pkgs
+
+
+@pytest.mark.parametrize(
+    "files, where, expected_package_dir",
+    [
+        (["pkg1/__init__.py", "pkg1/other.py"], ["."], {}),
+        (["pkg1/__init__.py", "pkg2/__init__.py"], ["."], {}),
+        (["src/pkg1/__init__.py", "src/pkg1/other.py"], ["src"], {"": "src"}),
+        (["src/pkg1/__init__.py", "src/pkg2/__init__.py"], ["src"], {"": "src"}),
+        (
+            ["src1/pkg1/__init__.py", "src2/pkg2/__init__.py"],
+            ["src1", "src2"],
+            {"pkg1": "src1/pkg1", "pkg2": "src2/pkg2"},
+        ),
+        (
+            ["src/pkg1/__init__.py", "pkg2/__init__.py"],
+            ["src", "."],
+            {"pkg1": "src/pkg1"},
+        ),
+    ],
+)
+def test_fill_package_dir(tmp_path, files, where, expected_package_dir):
+    write_files({k: "" for k in files}, tmp_path)
+    pkg_dir = {}
+    kwargs = {"root_dir": tmp_path, "fill_package_dir": pkg_dir, "namespaces": False}
+    pkgs = expand.find_packages(where=where, **kwargs)
+    assert set(pkg_dir.items()) == set(expected_package_dir.items())
+    for pkg in pkgs:
+        pkg_path = find_package_path(pkg, pkg_dir, tmp_path)
+        assert os.path.exists(pkg_path)

rl/Lib/site-packages/setuptools/tests/config/test_pyprojecttoml.py

@@ -0,0 +1,396 @@
+import re
+from configparser import ConfigParser
+from inspect import cleandoc
+
+import jaraco.path
+import pytest
+import tomli_w
+from path import Path
+
+import setuptools  # noqa: F401 # force distutils.core to be patched
+from setuptools.config.pyprojecttoml import (
+    _ToolsTypoInMetadata,
+    apply_configuration,
+    expand_configuration,
+    read_configuration,
+    validate,
+)
+from setuptools.dist import Distribution
+from setuptools.errors import OptionError
+
+import distutils.core
+
+EXAMPLE = """
+[project]
+name = "myproj"
+keywords = ["some", "key", "words"]
+dynamic = ["version", "readme"]
+requires-python = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
+dependencies = [
+    'importlib-metadata>=0.12;python_version<"3.8"',
+    'importlib-resources>=1.0;python_version<"3.7"',
+    'pathlib2>=2.3.3,<3;python_version < "3.4" and sys.platform != "win32"',
+]
+
+[project.optional-dependencies]
+docs = [
+    "sphinx>=3",
+    "sphinx-argparse>=0.2.5",
+    "sphinx-rtd-theme>=0.4.3",
+]
+testing = [
+    "pytest>=1",
+    "coverage>=3,<5",
+]
+
+[project.scripts]
+exec = "pkg.__main__:exec"
+
+[build-system]
+requires = ["setuptools", "wheel"]
+build-backend = "setuptools.build_meta"
+
+[tool.setuptools]
+package-dir = {"" = "src"}
+zip-safe = true
+platforms = ["any"]
+
+[tool.setuptools.packages.find]
+where = ["src"]
+
+[tool.setuptools.cmdclass]
+sdist = "pkg.mod.CustomSdist"
+
+[tool.setuptools.dynamic.version]
+attr = "pkg.__version__.VERSION"
+
+[tool.setuptools.dynamic.readme]
+file = ["README.md"]
+content-type = "text/markdown"
+
+[tool.setuptools.package-data]
+"*" = ["*.txt"]
+
+[tool.setuptools.data-files]
+"data" = ["_files/*.txt"]
+
+[tool.distutils.sdist]
+formats = "gztar"
+
+[tool.distutils.bdist_wheel]
+universal = true
+"""
+
+
+def create_example(path, pkg_root):
+    files = {
+        "pyproject.toml": EXAMPLE,
+        "README.md": "hello world",
+        "_files": {
+            "file.txt": "",
+        },
+    }
+    packages = {
+        "pkg": {
+            "__init__.py": "",
+            "mod.py": "class CustomSdist: pass",
+            "__version__.py": "VERSION = (3, 10)",
+            "__main__.py": "def exec(): print('hello')",
+        },
+    }
+
+    assert pkg_root  # Meta-test: cannot be empty string.
+
+    if pkg_root == ".":
+        files = {**files, **packages}
+        # skip other files: flat-layout will raise error for multi-package dist
+    else:
+        # Use this opportunity to ensure namespaces are discovered
+        files[pkg_root] = {**packages, "other": {"nested": {"__init__.py": ""}}}
+
+    jaraco.path.build(files, prefix=path)
+
+
+def verify_example(config, path, pkg_root):
+    pyproject = path / "pyproject.toml"
+    pyproject.write_text(tomli_w.dumps(config), encoding="utf-8")
+    expanded = expand_configuration(config, path)
+    expanded_project = expanded["project"]
+    assert read_configuration(pyproject, expand=True) == expanded
+    assert expanded_project["version"] == "3.10"
+    assert expanded_project["readme"]["text"] == "hello world"
+    assert "packages" in expanded["tool"]["setuptools"]
+    if pkg_root == ".":
+        # Auto-discovery will raise error for multi-package dist
+        assert set(expanded["tool"]["setuptools"]["packages"]) == {"pkg"}
+    else:
+        assert set(expanded["tool"]["setuptools"]["packages"]) == {
+            "pkg",
+            "other",
+            "other.nested",
+        }
+    assert expanded["tool"]["setuptools"]["include-package-data"] is True
+    assert "" in expanded["tool"]["setuptools"]["package-data"]
+    assert "*" not in expanded["tool"]["setuptools"]["package-data"]
+    assert expanded["tool"]["setuptools"]["data-files"] == [
+        ("data", ["_files/file.txt"])
+    ]
+
+
+def test_read_configuration(tmp_path):
+    create_example(tmp_path, "src")
+    pyproject = tmp_path / "pyproject.toml"
+
+    config = read_configuration(pyproject, expand=False)
+    assert config["project"].get("version") is None
+    assert config["project"].get("readme") is None
+
+    verify_example(config, tmp_path, "src")
+
+
+@pytest.mark.parametrize(
+    "pkg_root, opts",
+    [
+        (".", {}),
+        ("src", {}),
+        ("lib", {"packages": {"find": {"where": ["lib"]}}}),
+    ],
+)
+def test_discovered_package_dir_with_attr_directive_in_config(tmp_path, pkg_root, opts):
+    create_example(tmp_path, pkg_root)
+
+    pyproject = tmp_path / "pyproject.toml"
+
+    config = read_configuration(pyproject, expand=False)
+    assert config["project"].get("version") is None
+    assert config["project"].get("readme") is None
+    config["tool"]["setuptools"].pop("packages", None)
+    config["tool"]["setuptools"].pop("package-dir", None)
+
+    config["tool"]["setuptools"].update(opts)
+    verify_example(config, tmp_path, pkg_root)
+
+
+ENTRY_POINTS = {
+    "console_scripts": {"a": "mod.a:func"},
+    "gui_scripts": {"b": "mod.b:func"},
+    "other": {"c": "mod.c:func [extra]"},
+}
+
+
+class TestEntryPoints:
+    def write_entry_points(self, tmp_path):
+        entry_points = ConfigParser()
+        entry_points.read_dict(ENTRY_POINTS)
+        with open(tmp_path / "entry-points.txt", "w", encoding="utf-8") as f:
+            entry_points.write(f)
+
+    def pyproject(self, dynamic=None):
+        project = {"dynamic": dynamic or ["scripts", "gui-scripts", "entry-points"]}
+        tool = {"dynamic": {"entry-points": {"file": "entry-points.txt"}}}
+        return {"project": project, "tool": {"setuptools": tool}}
+
+    def test_all_listed_in_dynamic(self, tmp_path):
+        self.write_entry_points(tmp_path)
+        expanded = expand_configuration(self.pyproject(), tmp_path)
+        expanded_project = expanded["project"]
+        assert len(expanded_project["scripts"]) == 1
+        assert expanded_project["scripts"]["a"] == "mod.a:func"
+        assert len(expanded_project["gui-scripts"]) == 1
+        assert expanded_project["gui-scripts"]["b"] == "mod.b:func"
+        assert len(expanded_project["entry-points"]) == 1
+        assert expanded_project["entry-points"]["other"]["c"] == "mod.c:func [extra]"
+
+    @pytest.mark.parametrize("missing_dynamic", ("scripts", "gui-scripts"))
+    def test_scripts_not_listed_in_dynamic(self, tmp_path, missing_dynamic):
+        self.write_entry_points(tmp_path)
+        dynamic = {"scripts", "gui-scripts", "entry-points"} - {missing_dynamic}
+
+        msg = f"defined outside of `pyproject.toml`:.*{missing_dynamic}"
+        with pytest.raises(OptionError, match=re.compile(msg, re.S)):
+            expand_configuration(self.pyproject(dynamic), tmp_path)
+
+
+class TestClassifiers:
+    def test_dynamic(self, tmp_path):
+        # Let's create a project example that has dynamic classifiers
+        # coming from a txt file.
+        create_example(tmp_path, "src")
+        classifiers = cleandoc(
+            """
+            Framework :: Flask
+            Programming Language :: Haskell
+            """
+        )
+        (tmp_path / "classifiers.txt").write_text(classifiers, encoding="utf-8")
+
+        pyproject = tmp_path / "pyproject.toml"
+        config = read_configuration(pyproject, expand=False)
+        dynamic = config["project"]["dynamic"]
+        config["project"]["dynamic"] = list({*dynamic, "classifiers"})
+        dynamic_config = config["tool"]["setuptools"]["dynamic"]
+        dynamic_config["classifiers"] = {"file": "classifiers.txt"}
+
+        # When the configuration is expanded,
+        # each line of the file should be an different classifier.
+        validate(config, pyproject)
+        expanded = expand_configuration(config, tmp_path)
+
+        assert set(expanded["project"]["classifiers"]) == {
+            "Framework :: Flask",
+            "Programming Language :: Haskell",
+        }
+
+    def test_dynamic_without_config(self, tmp_path):
+        config = """
+        [project]
+        name = "myproj"
+        version = '42'
+        dynamic = ["classifiers"]
+        """
+
+        pyproject = tmp_path / "pyproject.toml"
+        pyproject.write_text(cleandoc(config), encoding="utf-8")
+        with pytest.raises(OptionError, match="No configuration .* .classifiers."):
+            read_configuration(pyproject)
+
+    def test_dynamic_readme_from_setup_script_args(self, tmp_path):
+        config = """
+        [project]
+        name = "myproj"
+        version = '42'
+        dynamic = ["readme"]
+        """
+        pyproject = tmp_path / "pyproject.toml"
+        pyproject.write_text(cleandoc(config), encoding="utf-8")
+        dist = Distribution(attrs={"long_description": "42"})
+        # No error should occur because of missing `readme`
+        dist = apply_configuration(dist, pyproject)
+        assert dist.metadata.long_description == "42"
+
+    def test_dynamic_without_file(self, tmp_path):
+        config = """
+        [project]
+        name = "myproj"
+        version = '42'
+        dynamic = ["classifiers"]
+
+        [tool.setuptools.dynamic]
+        classifiers = {file = ["classifiers.txt"]}
+        """
+
+        pyproject = tmp_path / "pyproject.toml"
+        pyproject.write_text(cleandoc(config), encoding="utf-8")
+        with pytest.warns(UserWarning, match="File .*classifiers.txt. cannot be found"):
+            expanded = read_configuration(pyproject)
+        assert "classifiers" not in expanded["project"]
+
+
+@pytest.mark.parametrize(
+    "example",
+    (
+        """
+        [project]
+        name = "myproj"
+        version = "1.2"
+
+        [my-tool.that-disrespect.pep518]
+        value = 42
+        """,
+    ),
+)
+def test_ignore_unrelated_config(tmp_path, example):
+    pyproject = tmp_path / "pyproject.toml"
+    pyproject.write_text(cleandoc(example), encoding="utf-8")
+
+    # Make sure no error is raised due to 3rd party configs in pyproject.toml
+    assert read_configuration(pyproject) is not None
+
+
+@pytest.mark.parametrize(
+    "example, error_msg",
+    [
+        (
+            """
+            [project]
+            name = "myproj"
+            version = "1.2"
+            requires = ['pywin32; platform_system=="Windows"' ]
+            """,
+            "configuration error: .project. must not contain ..requires.. properties",
+        ),
+    ],
+)
+def test_invalid_example(tmp_path, example, error_msg):
+    pyproject = tmp_path / "pyproject.toml"
+    pyproject.write_text(cleandoc(example), encoding="utf-8")
+
+    pattern = re.compile(f"invalid pyproject.toml.*{error_msg}.*", re.M | re.S)
+    with pytest.raises(ValueError, match=pattern):
+        read_configuration(pyproject)
+
+
+@pytest.mark.parametrize("config", ("", "[tool.something]\nvalue = 42"))
+def test_empty(tmp_path, config):
+    pyproject = tmp_path / "pyproject.toml"
+    pyproject.write_text(config, encoding="utf-8")
+
+    # Make sure no error is raised
+    assert read_configuration(pyproject) == {}
+
+
+@pytest.mark.parametrize("config", ("[project]\nname = 'myproj'\nversion='42'\n",))
+def test_include_package_data_by_default(tmp_path, config):
+    """Builds with ``pyproject.toml`` should consider ``include-package-data=True`` as
+    default.
+    """
+    pyproject = tmp_path / "pyproject.toml"
+    pyproject.write_text(config, encoding="utf-8")
+
+    config = read_configuration(pyproject)
+    assert config["tool"]["setuptools"]["include-package-data"] is True
+
+
+def test_include_package_data_in_setuppy(tmp_path):
+    """Builds with ``pyproject.toml`` should consider ``include_package_data`` set in
+    ``setup.py``.
+
+    See https://github.com/pypa/setuptools/issues/3197#issuecomment-1079023889
+    """
+    files = {
+        "pyproject.toml": "[project]\nname = 'myproj'\nversion='42'\n",
+        "setup.py": "__import__('setuptools').setup(include_package_data=False)",
+    }
+    jaraco.path.build(files, prefix=tmp_path)
+
+    with Path(tmp_path):
+        dist = distutils.core.run_setup("setup.py", {}, stop_after="config")
+
+    assert dist.get_name() == "myproj"
+    assert dist.get_version() == "42"
+    assert dist.include_package_data is False
+
+
+def test_warn_tools_typo(tmp_path):
+    """Test that the common ``tools.setuptools`` typo in ``pyproject.toml`` issues a warning
+
+    See https://github.com/pypa/setuptools/issues/4150
+    """
+    config = """
+    [build-system]
+    requires = ["setuptools"]
+    build-backend = "setuptools.build_meta"
+
+    [project]
+    name = "myproj"
+    version = '42'
+
+    [tools.setuptools]
+    packages = ["package"]
+    """
+
+    pyproject = tmp_path / "pyproject.toml"
+    pyproject.write_text(cleandoc(config), encoding="utf-8")
+
+    with pytest.warns(_ToolsTypoInMetadata):
+        read_configuration(pyproject)

rl/Lib/site-packages/setuptools/tests/config/test_pyprojecttoml_dynamic_deps.py

@@ -0,0 +1,109 @@
+from inspect import cleandoc
+
+import pytest
+from jaraco import path
+
+from setuptools.config.pyprojecttoml import apply_configuration
+from setuptools.dist import Distribution
+from setuptools.warnings import SetuptoolsWarning
+
+
+def test_dynamic_dependencies(tmp_path):
+    files = {
+        "requirements.txt": "six\n  # comment\n",
+        "pyproject.toml": cleandoc(
+            """
+            [project]
+            name = "myproj"
+            version = "1.0"
+            dynamic = ["dependencies"]
+
+            [build-system]
+            requires = ["setuptools", "wheel"]
+            build-backend = "setuptools.build_meta"
+
+            [tool.setuptools.dynamic.dependencies]
+            file = ["requirements.txt"]
+            """
+        ),
+    }
+    path.build(files, prefix=tmp_path)
+    dist = Distribution()
+    dist = apply_configuration(dist, tmp_path / "pyproject.toml")
+    assert dist.install_requires == ["six"]
+
+
+def test_dynamic_optional_dependencies(tmp_path):
+    files = {
+        "requirements-docs.txt": "sphinx\n  # comment\n",
+        "pyproject.toml": cleandoc(
+            """
+            [project]
+            name = "myproj"
+            version = "1.0"
+            dynamic = ["optional-dependencies"]
+
+            [tool.setuptools.dynamic.optional-dependencies.docs]
+            file = ["requirements-docs.txt"]
+
+            [build-system]
+            requires = ["setuptools", "wheel"]
+            build-backend = "setuptools.build_meta"
+            """
+        ),
+    }
+    path.build(files, prefix=tmp_path)
+    dist = Distribution()
+    dist = apply_configuration(dist, tmp_path / "pyproject.toml")
+    assert dist.extras_require == {"docs": ["sphinx"]}
+
+
+def test_mixed_dynamic_optional_dependencies(tmp_path):
+    """
+    Test that if PEP 621 was loosened to allow mixing of dynamic and static
+    configurations in the case of fields containing sub-fields (groups),
+    things would work out.
+    """
+    files = {
+        "requirements-images.txt": "pillow~=42.0\n  # comment\n",
+        "pyproject.toml": cleandoc(
+            """
+            [project]
+            name = "myproj"
+            version = "1.0"
+            dynamic = ["optional-dependencies"]
+
+            [project.optional-dependencies]
+            docs = ["sphinx"]
+
+            [tool.setuptools.dynamic.optional-dependencies.images]
+            file = ["requirements-images.txt"]
+            """
+        ),
+    }
+
+    path.build(files, prefix=tmp_path)
+    pyproject = tmp_path / "pyproject.toml"
+    with pytest.raises(ValueError, match="project.optional-dependencies"):
+        apply_configuration(Distribution(), pyproject)
+
+
+def test_mixed_extras_require_optional_dependencies(tmp_path):
+    files = {
+        "pyproject.toml": cleandoc(
+            """
+            [project]
+            name = "myproj"
+            version = "1.0"
+            optional-dependencies.docs = ["sphinx"]
+            """
+        ),
+    }
+
+    path.build(files, prefix=tmp_path)
+    pyproject = tmp_path / "pyproject.toml"
+
+    with pytest.warns(SetuptoolsWarning, match=".extras_require. overwritten"):
+        dist = Distribution({"extras_require": {"hello": ["world"]}})
+        dist = apply_configuration(dist, pyproject)
+        assert dist.extras_require == {"docs": ["sphinx"]}

rl/Lib/site-packages/setuptools/tests/config/test_setupcfg.py

@@ -0,0 +1,967 @@
+import configparser
+import contextlib
+import inspect
+from pathlib import Path
+from unittest.mock import Mock, patch
+
+import pytest
+from packaging.requirements import InvalidRequirement
+
+from setuptools.config.setupcfg import ConfigHandler, Target, read_configuration
+from setuptools.dist import Distribution, _Distribution
+from setuptools.warnings import SetuptoolsDeprecationWarning
+
+from ..textwrap import DALS
+
+from distutils.errors import DistutilsFileError, DistutilsOptionError
+
+
+class ErrConfigHandler(ConfigHandler[Target]):
+    """Erroneous handler. Fails to implement required methods."""
+
+    section_prefix = "**err**"
+
+
+def make_package_dir(name, base_dir, ns=False):
+    dir_package = base_dir
+    for dir_name in name.split('/'):
+        dir_package = dir_package.mkdir(dir_name)
+    init_file = None
+    if not ns:
+        init_file = dir_package.join('__init__.py')
+        init_file.write('')
+    return dir_package, init_file
+
+
+def fake_env(
+    tmpdir, setup_cfg, setup_py=None, encoding='ascii', package_path='fake_package'
+):
+    if setup_py is None:
+        setup_py = 'from setuptools import setup\nsetup()\n'
+
+    tmpdir.join('setup.py').write(setup_py)
+    config = tmpdir.join('setup.cfg')
+    config.write(setup_cfg.encode(encoding), mode='wb')
+
+    package_dir, init_file = make_package_dir(package_path, tmpdir)
+
+    init_file.write(
+        'VERSION = (1, 2, 3)\n'
+        '\n'
+        'VERSION_MAJOR = 1'
+        '\n'
+        'def get_version():\n'
+        '    return [3, 4, 5, "dev"]\n'
+        '\n'
+    )
+
+    return package_dir, config
+
+
+@contextlib.contextmanager
+def get_dist(tmpdir, kwargs_initial=None, parse=True):
+    kwargs_initial = kwargs_initial or {}
+
+    with tmpdir.as_cwd():
+        dist = Distribution(kwargs_initial)
+        dist.script_name = 'setup.py'
+        parse and dist.parse_config_files()
+
+        yield dist
+
+
+def test_parsers_implemented():
+    with pytest.raises(NotImplementedError):
+        handler = ErrConfigHandler(None, {}, False, Mock())
+        handler.parsers
+
+
+class TestConfigurationReader:
+    def test_basic(self, tmpdir):
+        _, config = fake_env(
+            tmpdir,
+            '[metadata]\n'
+            'version = 10.1.1\n'
+            'keywords = one, two\n'
+            '\n'
+            '[options]\n'
+            'scripts = bin/a.py, bin/b.py\n',
+        )
+        config_dict = read_configuration('%s' % config)
+        assert config_dict['metadata']['version'] == '10.1.1'
+        assert config_dict['metadata']['keywords'] == ['one', 'two']
+        assert config_dict['options']['scripts'] == ['bin/a.py', 'bin/b.py']
+
+    def test_no_config(self, tmpdir):
+        with pytest.raises(DistutilsFileError):
+            read_configuration('%s' % tmpdir.join('setup.cfg'))
+
+    def test_ignore_errors(self, tmpdir):
+        _, config = fake_env(
+            tmpdir,
+            '[metadata]\nversion = attr: none.VERSION\nkeywords = one, two\n',
+        )
+        with pytest.raises(ImportError):
+            read_configuration('%s' % config)
+
+        config_dict = read_configuration('%s' % config, ignore_option_errors=True)
+
+        assert config_dict['metadata']['keywords'] == ['one', 'two']
+        assert 'version' not in config_dict['metadata']
+
+        config.remove()
+
+
+class TestMetadata:
+    def test_basic(self, tmpdir):
+        fake_env(
+            tmpdir,
+            '[metadata]\n'
+            'version = 10.1.1\n'
+            'description = Some description\n'
+            'long_description_content_type = text/something\n'
+            'long_description = file: README\n'
+            'name = fake_name\n'
+            'keywords = one, two\n'
+            'provides = package, package.sub\n'
+            'license = otherlic\n'
+            'download_url = http://test.test.com/test/\n'
+            'maintainer_email = test@test.com\n',
+        )
+
+        tmpdir.join('README').write('readme contents\nline2')
+
+        meta_initial = {
+            # This will be used so `otherlic` won't replace it.
+            'license': 'BSD 3-Clause License',
+        }
+
+        with get_dist(tmpdir, meta_initial) as dist:
+            metadata = dist.metadata
+
+            assert metadata.version == '10.1.1'
+            assert metadata.description == 'Some description'
+            assert metadata.long_description_content_type == 'text/something'
+            assert metadata.long_description == 'readme contents\nline2'
+            assert metadata.provides == ['package', 'package.sub']
+            assert metadata.license == 'BSD 3-Clause License'
+            assert metadata.name == 'fake_name'
+            assert metadata.keywords == ['one', 'two']
+            assert metadata.download_url == 'http://test.test.com/test/'
+            assert metadata.maintainer_email == 'test@test.com'
+
+    def test_license_cfg(self, tmpdir):
+        fake_env(
+            tmpdir,
+            DALS(
+                """
+            [metadata]
+            name=foo
+            version=0.0.1
+            license=Apache 2.0
+            """
+            ),
+        )
+
+        with get_dist(tmpdir) as dist:
+            metadata = dist.metadata
+
+            assert metadata.name == "foo"
+            assert metadata.version == "0.0.1"
+            assert metadata.license == "Apache 2.0"
+
+    def test_file_mixed(self, tmpdir):
+        fake_env(
+            tmpdir,
+            '[metadata]\nlong_description = file: README.rst, CHANGES.rst\n\n',
+        )
+
+        tmpdir.join('README.rst').write('readme contents\nline2')
+        tmpdir.join('CHANGES.rst').write('changelog contents\nand stuff')
+
+        with get_dist(tmpdir) as dist:
+            assert dist.metadata.long_description == (
+                'readme contents\nline2\nchangelog contents\nand stuff'
+            )
+
+    def test_file_sandboxed(self, tmpdir):
+        tmpdir.ensure("README")
+        project = tmpdir.join('depth1', 'depth2')
+        project.ensure(dir=True)
+        fake_env(project, '[metadata]\nlong_description = file: ../../README\n')
+
+        with get_dist(project, parse=False) as dist:
+            with pytest.raises(DistutilsOptionError):
+                dist.parse_config_files()  # file: out of sandbox
+
+    def test_aliases(self, tmpdir):
+        fake_env(
+            tmpdir,
+            '[metadata]\n'
+            'author_email = test@test.com\n'
+            'home_page = http://test.test.com/test/\n'
+            'summary = Short summary\n'
+            'platform = a, b\n'
+            'classifier =\n'
+            '  Framework :: Django\n'
+            '  Programming Language :: Python :: 3.5\n',
+        )
+
+        with get_dist(tmpdir) as dist:
+            metadata = dist.metadata
+            assert metadata.author_email == 'test@test.com'
+            assert metadata.url == 'http://test.test.com/test/'
+            assert metadata.description == 'Short summary'
+            assert metadata.platforms == ['a', 'b']
+            assert metadata.classifiers == [
+                'Framework :: Django',
+                'Programming Language :: Python :: 3.5',
+            ]
+
+    def test_multiline(self, tmpdir):
+        fake_env(
+            tmpdir,
+            '[metadata]\n'
+            'name = fake_name\n'
+            'keywords =\n'
+            '  one\n'
+            '  two\n'
+            'classifiers =\n'
+            '  Framework :: Django\n'
+            '  Programming Language :: Python :: 3.5\n',
+        )
+        with get_dist(tmpdir) as dist:
+            metadata = dist.metadata
+            assert metadata.keywords == ['one', 'two']
+            assert metadata.classifiers == [
+                'Framework :: Django',
+                'Programming Language :: Python :: 3.5',
+            ]
+
+    def test_dict(self, tmpdir):
+        fake_env(
+            tmpdir,
+            '[metadata]\n'
+            'project_urls =\n'
+            '  Link One = https://example.com/one/\n'
+            '  Link Two = https://example.com/two/\n',
+        )
+        with get_dist(tmpdir) as dist:
+            metadata = dist.metadata
+            assert metadata.project_urls == {
+                'Link One': 'https://example.com/one/',
+                'Link Two': 'https://example.com/two/',
+            }
+
+    def test_version(self, tmpdir):
+        package_dir, config = fake_env(
+            tmpdir, '[metadata]\nversion = attr: fake_package.VERSION\n'
+        )
+
+        sub_a = package_dir.mkdir('subpkg_a')
+        sub_a.join('__init__.py').write('')
+        sub_a.join('mod.py').write('VERSION = (2016, 11, 26)')
+
+        sub_b = package_dir.mkdir('subpkg_b')
+        sub_b.join('__init__.py').write('')
+        sub_b.join('mod.py').write(
+            'import third_party_module\nVERSION = (2016, 11, 26)'
+        )
+
+        with get_dist(tmpdir) as dist:
+            assert dist.metadata.version == '1.2.3'
+
+        config.write('[metadata]\nversion = attr: fake_package.get_version\n')
+        with get_dist(tmpdir) as dist:
+            assert dist.metadata.version == '3.4.5.dev'
+
+        config.write('[metadata]\nversion = attr: fake_package.VERSION_MAJOR\n')
+        with get_dist(tmpdir) as dist:
+            assert dist.metadata.version == '1'
+
+        config.write('[metadata]\nversion = attr: fake_package.subpkg_a.mod.VERSION\n')
+        with get_dist(tmpdir) as dist:
+            assert dist.metadata.version == '2016.11.26'
+
+        config.write('[metadata]\nversion = attr: fake_package.subpkg_b.mod.VERSION\n')
+        with get_dist(tmpdir) as dist:
+            assert dist.metadata.version == '2016.11.26'
+
+    def test_version_file(self, tmpdir):
+        _, config = fake_env(
+            tmpdir, '[metadata]\nversion = file: fake_package/version.txt\n'
+        )
+        tmpdir.join('fake_package', 'version.txt').write('1.2.3\n')
+
+        with get_dist(tmpdir) as dist:
+            assert dist.metadata.version == '1.2.3'
+
+        tmpdir.join('fake_package', 'version.txt').write('1.2.3\n4.5.6\n')
+        with pytest.raises(DistutilsOptionError):
+            with get_dist(tmpdir) as dist:
+                dist.metadata.version
+
+    def test_version_with_package_dir_simple(self, tmpdir):
+        _, config = fake_env(
+            tmpdir,
+            '[metadata]\n'
+            'version = attr: fake_package_simple.VERSION\n'
+            '[options]\n'
+            'package_dir =\n'
+            '    = src\n',
+            package_path='src/fake_package_simple',
+        )
+
+        with get_dist(tmpdir) as dist:
+            assert dist.metadata.version == '1.2.3'
+
+    def test_version_with_package_dir_rename(self, tmpdir):
+        _, config = fake_env(
+            tmpdir,
+            '[metadata]\n'
+            'version = attr: fake_package_rename.VERSION\n'
+            '[options]\n'
+            'package_dir =\n'
+            '    fake_package_rename = fake_dir\n',
+            package_path='fake_dir',
+        )
+
+        with get_dist(tmpdir) as dist:
+            assert dist.metadata.version == '1.2.3'
+
+    def test_version_with_package_dir_complex(self, tmpdir):
+        _, config = fake_env(
+            tmpdir,
+            '[metadata]\n'
+            'version = attr: fake_package_complex.VERSION\n'
+            '[options]\n'
+            'package_dir =\n'
+            '    fake_package_complex = src/fake_dir\n',
+            package_path='src/fake_dir',
+        )
+
+        with get_dist(tmpdir) as dist:
+            assert dist.metadata.version == '1.2.3'
+
+    def test_unknown_meta_item(self, tmpdir):
+        fake_env(tmpdir, '[metadata]\nname = fake_name\nunknown = some\n')
+        with get_dist(tmpdir, parse=False) as dist:
+            dist.parse_config_files()  # Skip unknown.
+
+    def test_usupported_section(self, tmpdir):
+        fake_env(tmpdir, '[metadata.some]\nkey = val\n')
+        with get_dist(tmpdir, parse=False) as dist:
+            with pytest.raises(DistutilsOptionError):
+                dist.parse_config_files()
+
+    def test_classifiers(self, tmpdir):
+        expected = set([
+            'Framework :: Django',
+            'Programming Language :: Python :: 3',
+            'Programming Language :: Python :: 3.5',
+        ])
+
+        # From file.
+        _, config = fake_env(tmpdir, '[metadata]\nclassifiers = file: classifiers\n')
+
+        tmpdir.join('classifiers').write(
+            'Framework :: Django\n'
+            'Programming Language :: Python :: 3\n'
+            'Programming Language :: Python :: 3.5\n'
+        )
+
+        with get_dist(tmpdir) as dist:
+            assert set(dist.metadata.classifiers) == expected
+
+        # From list notation
+        config.write(
+            '[metadata]\n'
+            'classifiers =\n'
+            '    Framework :: Django\n'
+            '    Programming Language :: Python :: 3\n'
+            '    Programming Language :: Python :: 3.5\n'
+        )
+        with get_dist(tmpdir) as dist:
+            assert set(dist.metadata.classifiers) == expected
+
+    def test_interpolation(self, tmpdir):
+        fake_env(tmpdir, '[metadata]\ndescription = %(message)s\n')
+        with pytest.raises(configparser.InterpolationMissingOptionError):
+            with get_dist(tmpdir):
+                pass
+
+    def test_non_ascii_1(self, tmpdir):
+        fake_env(tmpdir, '[metadata]\ndescription = éàïôñ\n', encoding='utf-8')
+        with get_dist(tmpdir):
+            pass
+
+    def test_non_ascii_3(self, tmpdir):
+        fake_env(tmpdir, '\n# -*- coding: invalid\n')
+        with get_dist(tmpdir):
+            pass
+
+    def test_non_ascii_4(self, tmpdir):
+        fake_env(
+            tmpdir,
+            '# -*- coding: utf-8\n[metadata]\ndescription = éàïôñ\n',
+            encoding='utf-8',
+        )
+        with get_dist(tmpdir) as dist:
+            assert dist.metadata.description == 'éàïôñ'
+
+    def test_not_utf8(self, tmpdir):
+        """
+        Config files encoded not in UTF-8 will fail
+        """
+        fake_env(
+            tmpdir,
+            '# vim: set fileencoding=iso-8859-15 :\n[metadata]\ndescription = éàïôñ\n',
+            encoding='iso-8859-15',
+        )
+        with pytest.raises(UnicodeDecodeError):
+            with get_dist(tmpdir):
+                pass
+
+    def test_warn_dash_deprecation(self, tmpdir):
+        # warn_dash_deprecation() is a method in setuptools.dist
+        # remove this test and the method when no longer needed
+        fake_env(
+            tmpdir,
+            '[metadata]\n'
+            'author-email = test@test.com\n'
+            'maintainer_email = foo@foo.com\n',
+        )
+        msg = "Usage of dash-separated 'author-email' will not be supported"
+        with pytest.warns(SetuptoolsDeprecationWarning, match=msg):
+            with get_dist(tmpdir) as dist:
+                metadata = dist.metadata
+
+        assert metadata.author_email == 'test@test.com'
+        assert metadata.maintainer_email == 'foo@foo.com'
+
+    def test_make_option_lowercase(self, tmpdir):
+        # remove this test and the method make_option_lowercase() in setuptools.dist
+        # when no longer needed
+        fake_env(tmpdir, '[metadata]\nName = foo\ndescription = Some description\n')
+        msg = "Usage of uppercase key 'Name' in 'metadata' will not be supported"
+        with pytest.warns(SetuptoolsDeprecationWarning, match=msg):
+            with get_dist(tmpdir) as dist:
+                metadata = dist.metadata
+
+        assert metadata.name == 'foo'
+        assert metadata.description == 'Some description'
+
+
+class TestOptions:
+    def test_basic(self, tmpdir):
+        fake_env(
+            tmpdir,
+            '[options]\n'
+            'zip_safe = True\n'
+            'include_package_data = yes\n'
+            'package_dir = b=c, =src\n'
+            'packages = pack_a, pack_b.subpack\n'
+            'namespace_packages = pack1, pack2\n'
+            'scripts = bin/one.py, bin/two.py\n'
+            'eager_resources = bin/one.py, bin/two.py\n'
+            'install_requires = docutils>=0.3; pack ==1.1, ==1.3; hey\n'
+            'setup_requires = docutils>=0.3; spack ==1.1, ==1.3; there\n'
+            'dependency_links = http://some.com/here/1, '
+            'http://some.com/there/2\n'
+            'python_requires = >=1.0, !=2.8\n'
+            'py_modules = module1, module2\n',
+        )
+        deprec = pytest.warns(SetuptoolsDeprecationWarning, match="namespace_packages")
+        with deprec, get_dist(tmpdir) as dist:
+            assert dist.zip_safe
+            assert dist.include_package_data
+            assert dist.package_dir == {'': 'src', 'b': 'c'}
+            assert dist.packages == ['pack_a', 'pack_b.subpack']
+            assert dist.namespace_packages == ['pack1', 'pack2']
+            assert dist.scripts == ['bin/one.py', 'bin/two.py']
+            assert dist.dependency_links == ([
+                'http://some.com/here/1',
+                'http://some.com/there/2',
+            ])
+            assert dist.install_requires == ([
+                'docutils>=0.3',
+                'pack==1.1,==1.3',
+                'hey',
+            ])
+            assert dist.setup_requires == ([
+                'docutils>=0.3',
+                'spack ==1.1, ==1.3',
+                'there',
+            ])
+            assert dist.python_requires == '>=1.0, !=2.8'
+            assert dist.py_modules == ['module1', 'module2']
+
+    def test_multiline(self, tmpdir):
+        fake_env(
+            tmpdir,
+            '[options]\n'
+            'package_dir = \n'
+            '  b=c\n'
+            '  =src\n'
+            'packages = \n'
+            '  pack_a\n'
+            '  pack_b.subpack\n'
+            'namespace_packages = \n'
+            '  pack1\n'
+            '  pack2\n'
+            'scripts = \n'
+            '  bin/one.py\n'
+            '  bin/two.py\n'
+            'eager_resources = \n'
+            '  bin/one.py\n'
+            '  bin/two.py\n'
+            'install_requires = \n'
+            '  docutils>=0.3\n'
+            '  pack ==1.1, ==1.3\n'
+            '  hey\n'
+            'setup_requires = \n'
+            '  docutils>=0.3\n'
+            '  spack ==1.1, ==1.3\n'
+            '  there\n'
+            'dependency_links = \n'
+            '  http://some.com/here/1\n'
+            '  http://some.com/there/2\n',
+        )
+        deprec = pytest.warns(SetuptoolsDeprecationWarning, match="namespace_packages")
+        with deprec, get_dist(tmpdir) as dist:
+            assert dist.package_dir == {'': 'src', 'b': 'c'}
+            assert dist.packages == ['pack_a', 'pack_b.subpack']
+            assert dist.namespace_packages == ['pack1', 'pack2']
+            assert dist.scripts == ['bin/one.py', 'bin/two.py']
+            assert dist.dependency_links == ([
+                'http://some.com/here/1',
+                'http://some.com/there/2',
+            ])
+            assert dist.install_requires == ([
+                'docutils>=0.3',
+                'pack==1.1,==1.3',
+                'hey',
+            ])
+            assert dist.setup_requires == ([
+                'docutils>=0.3',
+                'spack ==1.1, ==1.3',
+                'there',
+            ])
+
+    def test_package_dir_fail(self, tmpdir):
+        fake_env(tmpdir, '[options]\npackage_dir = a b\n')
+        with get_dist(tmpdir, parse=False) as dist:
+            with pytest.raises(DistutilsOptionError):
+                dist.parse_config_files()
+
+    def test_package_data(self, tmpdir):
+        fake_env(
+            tmpdir,
+            '[options.package_data]\n'
+            '* = *.txt, *.rst\n'
+            'hello = *.msg\n'
+            '\n'
+            '[options.exclude_package_data]\n'
+            '* = fake1.txt, fake2.txt\n'
+            'hello = *.dat\n',
+        )
+
+        with get_dist(tmpdir) as dist:
+            assert dist.package_data == {
+                '': ['*.txt', '*.rst'],
+                'hello': ['*.msg'],
+            }
+            assert dist.exclude_package_data == {
+                '': ['fake1.txt', 'fake2.txt'],
+                'hello': ['*.dat'],
+            }
+
+    def test_packages(self, tmpdir):
+        fake_env(tmpdir, '[options]\npackages = find:\n')
+
+        with get_dist(tmpdir) as dist:
+            assert dist.packages == ['fake_package']
+
+    def test_find_directive(self, tmpdir):
+        dir_package, config = fake_env(tmpdir, '[options]\npackages = find:\n')
+
+        dir_sub_one, _ = make_package_dir('sub_one', dir_package)
+        dir_sub_two, _ = make_package_dir('sub_two', dir_package)
+
+        with get_dist(tmpdir) as dist:
+            assert set(dist.packages) == set([
+                'fake_package',
+                'fake_package.sub_two',
+                'fake_package.sub_one',
+            ])
+
+        config.write(
+            '[options]\n'
+            'packages = find:\n'
+            '\n'
+            '[options.packages.find]\n'
+            'where = .\n'
+            'include =\n'
+            '    fake_package.sub_one\n'
+            '    two\n'
+        )
+        with get_dist(tmpdir) as dist:
+            assert dist.packages == ['fake_package.sub_one']
+
+        config.write(
+            '[options]\n'
+            'packages = find:\n'
+            '\n'
+            '[options.packages.find]\n'
+            'exclude =\n'
+            '    fake_package.sub_one\n'
+        )
+        with get_dist(tmpdir) as dist:
+            assert set(dist.packages) == set(['fake_package', 'fake_package.sub_two'])
+
+    def test_find_namespace_directive(self, tmpdir):
+        dir_package, config = fake_env(
+            tmpdir, '[options]\npackages = find_namespace:\n'
+        )
+
+        dir_sub_one, _ = make_package_dir('sub_one', dir_package)
+        dir_sub_two, _ = make_package_dir('sub_two', dir_package, ns=True)
+
+        with get_dist(tmpdir) as dist:
+            assert set(dist.packages) == {
+                'fake_package',
+                'fake_package.sub_two',
+                'fake_package.sub_one',
+            }
+
+        config.write(
+            '[options]\n'
+            'packages = find_namespace:\n'
+            '\n'
+            '[options.packages.find]\n'
+            'where = .\n'
+            'include =\n'
+            '    fake_package.sub_one\n'
+            '    two\n'
+        )
+        with get_dist(tmpdir) as dist:
+            assert dist.packages == ['fake_package.sub_one']
+
+        config.write(
+            '[options]\n'
+            'packages = find_namespace:\n'
+            '\n'
+            '[options.packages.find]\n'
+            'exclude =\n'
+            '    fake_package.sub_one\n'
+        )
+        with get_dist(tmpdir) as dist:
+            assert set(dist.packages) == {'fake_package', 'fake_package.sub_two'}
+
+    def test_extras_require(self, tmpdir):
+        fake_env(
+            tmpdir,
+            '[options.extras_require]\n'
+            'pdf = ReportLab>=1.2; RXP\n'
+            'rest = \n'
+            '  docutils>=0.3\n'
+            '  pack ==1.1, ==1.3\n',
+        )
+
+        with get_dist(tmpdir) as dist:
+            assert dist.extras_require == {
+                'pdf': ['ReportLab>=1.2', 'RXP'],
+                'rest': ['docutils>=0.3', 'pack==1.1,==1.3'],
+            }
+            assert set(dist.metadata.provides_extras) == {'pdf', 'rest'}
+
+    @pytest.mark.parametrize(
+        "config",
+        [
+            "[options.extras_require]\nfoo = bar;python_version<'3'",
+            "[options.extras_require]\nfoo = bar;os_name=='linux'",
+            "[options.extras_require]\nfoo = bar;python_version<'3'\n",
+            "[options.extras_require]\nfoo = bar;os_name=='linux'\n",
+            "[options]\ninstall_requires = bar;python_version<'3'",
+            "[options]\ninstall_requires = bar;os_name=='linux'",
+            "[options]\ninstall_requires = bar;python_version<'3'\n",
+            "[options]\ninstall_requires = bar;os_name=='linux'\n",
+        ],
+    )
+    def test_raises_accidental_env_marker_misconfig(self, config, tmpdir):
+        fake_env(tmpdir, config)
+        match = (
+            r"One of the parsed requirements in `(install_requires|extras_require.+)` "
+            "looks like a valid environment marker.*"
+        )
+        with pytest.raises(InvalidRequirement, match=match):
+            with get_dist(tmpdir) as _:
+                pass
+
+    @pytest.mark.parametrize(
+        "config",
+        [
+            "[options.extras_require]\nfoo = bar;python_version<3",
+            "[options.extras_require]\nfoo = bar;python_version<3\n",
+            "[options]\ninstall_requires = bar;python_version<3",
+            "[options]\ninstall_requires = bar;python_version<3\n",
+        ],
+    )
+    def test_warn_accidental_env_marker_misconfig(self, config, tmpdir):
+        fake_env(tmpdir, config)
+        match = (
+            r"One of the parsed requirements in `(install_requires|extras_require.+)` "
+            "looks like a valid environment marker.*"
+        )
+        with pytest.warns(SetuptoolsDeprecationWarning, match=match):
+            with get_dist(tmpdir) as _:
+                pass
+
+    @pytest.mark.parametrize(
+        "config",
+        [
+            "[options.extras_require]\nfoo =\n    bar;python_version<'3'",
+            "[options.extras_require]\nfoo = bar;baz\nboo = xxx;yyy",
+            "[options.extras_require]\nfoo =\n    bar;python_version<'3'\n",
+            "[options.extras_require]\nfoo = bar;baz\nboo = xxx;yyy\n",
+            "[options.extras_require]\nfoo =\n    bar\n    python_version<3\n",
+            "[options]\ninstall_requires =\n    bar;python_version<'3'",
+            "[options]\ninstall_requires = bar;baz\nboo = xxx;yyy",
+            "[options]\ninstall_requires =\n    bar;python_version<'3'\n",
+            "[options]\ninstall_requires = bar;baz\nboo = xxx;yyy\n",
+            "[options]\ninstall_requires =\n    bar\n    python_version<3\n",
+        ],
+    )
+    @pytest.mark.filterwarnings("error::setuptools.SetuptoolsDeprecationWarning")
+    def test_nowarn_accidental_env_marker_misconfig(self, config, tmpdir, recwarn):
+        fake_env(tmpdir, config)
+        num_warnings = len(recwarn)
+        with get_dist(tmpdir) as _:
+            pass
+        # The examples are valid, no warnings shown
+        assert len(recwarn) == num_warnings
+
+    def test_dash_preserved_extras_require(self, tmpdir):
+        fake_env(tmpdir, '[options.extras_require]\nfoo-a = foo\nfoo_b = test\n')
+
+        with get_dist(tmpdir) as dist:
+            assert dist.extras_require == {'foo-a': ['foo'], 'foo_b': ['test']}
+
+    def test_entry_points(self, tmpdir):
+        _, config = fake_env(
+            tmpdir,
+            '[options.entry_points]\n'
+            'group1 = point1 = pack.module:func, '
+            '.point2 = pack.module2:func_rest [rest]\n'
+            'group2 = point3 = pack.module:func2\n',
+        )
+
+        with get_dist(tmpdir) as dist:
+            assert dist.entry_points == {
+                'group1': [
+                    'point1 = pack.module:func',
+                    '.point2 = pack.module2:func_rest [rest]',
+                ],
+                'group2': ['point3 = pack.module:func2'],
+            }
+
+        expected = (
+            '[blogtool.parsers]\n'
+            '.rst = some.nested.module:SomeClass.some_classmethod[reST]\n'
+        )
+
+        tmpdir.join('entry_points').write(expected)
+
+        # From file.
+        config.write('[options]\nentry_points = file: entry_points\n')
+
+        with get_dist(tmpdir) as dist:
+            assert dist.entry_points == expected
+
+    def test_case_sensitive_entry_points(self, tmpdir):
+        _, config = fake_env(
+            tmpdir,
+            '[options.entry_points]\n'
+            'GROUP1 = point1 = pack.module:func, '
+            '.point2 = pack.module2:func_rest [rest]\n'
+            'group2 = point3 = pack.module:func2\n',
+        )
+
+        with get_dist(tmpdir) as dist:
+            assert dist.entry_points == {
+                'GROUP1': [
+                    'point1 = pack.module:func',
+                    '.point2 = pack.module2:func_rest [rest]',
+                ],
+                'group2': ['point3 = pack.module:func2'],
+            }
+
+    def test_data_files(self, tmpdir):
+        fake_env(
+            tmpdir,
+            '[options.data_files]\n'
+            'cfg =\n'
+            '      a/b.conf\n'
+            '      c/d.conf\n'
+            'data = e/f.dat, g/h.dat\n',
+        )
+
+        with get_dist(tmpdir) as dist:
+            expected = [
+                ('cfg', ['a/b.conf', 'c/d.conf']),
+                ('data', ['e/f.dat', 'g/h.dat']),
+            ]
+            assert sorted(dist.data_files) == sorted(expected)
+
+    def test_data_files_globby(self, tmpdir):
+        fake_env(
+            tmpdir,
+            '[options.data_files]\n'
+            'cfg =\n'
+            '      a/b.conf\n'
+            '      c/d.conf\n'
+            'data = *.dat\n'
+            'icons = \n'
+            '      *.ico\n'
+            'audio = \n'
+            '      *.wav\n'
+            '      sounds.db\n',
+        )
+
+        # Create dummy files for glob()'s sake:
+        tmpdir.join('a.dat').write('')
+        tmpdir.join('b.dat').write('')
+        tmpdir.join('c.dat').write('')
+        tmpdir.join('a.ico').write('')
+        tmpdir.join('b.ico').write('')
+        tmpdir.join('c.ico').write('')
+        tmpdir.join('beep.wav').write('')
+        tmpdir.join('boop.wav').write('')
+        tmpdir.join('sounds.db').write('')
+
+        with get_dist(tmpdir) as dist:
+            expected = [
+                ('cfg', ['a/b.conf', 'c/d.conf']),
+                ('data', ['a.dat', 'b.dat', 'c.dat']),
+                ('icons', ['a.ico', 'b.ico', 'c.ico']),
+                ('audio', ['beep.wav', 'boop.wav', 'sounds.db']),
+            ]
+            assert sorted(dist.data_files) == sorted(expected)
+
+    def test_python_requires_simple(self, tmpdir):
+        fake_env(
+            tmpdir,
+            DALS(
+                """
+            [options]
+            python_requires=>=2.7
+            """
+            ),
+        )
+        with get_dist(tmpdir) as dist:
+            dist.parse_config_files()
+
+    def test_python_requires_compound(self, tmpdir):
+        fake_env(
+            tmpdir,
+            DALS(
+                """
+            [options]
+            python_requires=>=2.7,!=3.0.*
+            """
+            ),
+        )
+        with get_dist(tmpdir) as dist:
+            dist.parse_config_files()
+
+    def test_python_requires_invalid(self, tmpdir):
+        fake_env(
+            tmpdir,
+            DALS(
+                """
+            [options]
+            python_requires=invalid
+            """
+            ),
+        )
+        with pytest.raises(Exception):
+            with get_dist(tmpdir) as dist:
+                dist.parse_config_files()
+
+    def test_cmdclass(self, tmpdir):
+        module_path = Path(tmpdir, "src/custom_build.py")  # auto discovery for src
+        module_path.parent.mkdir(parents=True, exist_ok=True)
+        module_path.write_text(
+            "from distutils.core import Command\nclass CustomCmd(Command): pass\n",
+            encoding="utf-8",
+        )
+
+        setup_cfg = """
+            [options]
+            cmdclass =
+                customcmd = custom_build.CustomCmd
+        """
+        fake_env(tmpdir, inspect.cleandoc(setup_cfg))
+
+        with get_dist(tmpdir) as dist:
+            cmdclass = dist.cmdclass['customcmd']
+            assert cmdclass.__name__ == "CustomCmd"
+            assert cmdclass.__module__ == "custom_build"
+            assert module_path.samefile(inspect.getfile(cmdclass))
+
+    def test_requirements_file(self, tmpdir):
+        fake_env(
+            tmpdir,
+            DALS(
+                """
+            [options]
+            install_requires = file:requirements.txt
+            [options.extras_require]
+            colors = file:requirements-extra.txt
+            """
+            ),
+        )
+
+        tmpdir.join('requirements.txt').write('\ndocutils>=0.3\n\n')
+        tmpdir.join('requirements-extra.txt').write('colorama')
+
+        with get_dist(tmpdir) as dist:
+            assert dist.install_requires == ['docutils>=0.3']
+            assert dist.extras_require == {'colors': ['colorama']}
+
+
+saved_dist_init = _Distribution.__init__
+
+
+class TestExternalSetters:
+    # During creation of the setuptools Distribution() object, we call
+    # the init of the parent distutils Distribution object via
+    # _Distribution.__init__ ().
+    #
+    # It's possible distutils calls out to various keyword
+    # implementations (i.e. distutils.setup_keywords entry points)
+    # that may set a range of variables.
+    #
+    # This wraps distutil's Distribution.__init__ and simulates
+    # pbr or something else setting these values.
+    def _fake_distribution_init(self, dist, attrs):
+        saved_dist_init(dist, attrs)
+        # see self._DISTUTILS_UNSUPPORTED_METADATA
+        dist.metadata.long_description_content_type = 'text/something'
+        # Test overwrite setup() args
+        dist.metadata.project_urls = {
+            'Link One': 'https://example.com/one/',
+            'Link Two': 'https://example.com/two/',
+        }
+
+    @patch.object(_Distribution, '__init__', autospec=True)
+    def test_external_setters(self, mock_parent_init, tmpdir):
+        mock_parent_init.side_effect = self._fake_distribution_init
+
+        dist = Distribution(attrs={'project_urls': {'will_be': 'ignored'}})
+
+        assert dist.metadata.long_description_content_type == 'text/something'
+        assert dist.metadata.project_urls == {
+            'Link One': 'https://example.com/one/',
+            'Link Two': 'https://example.com/two/',
+        }

rl/Lib/site-packages/setuptools/tests/contexts.py

@@ -0,0 +1,145 @@
+import contextlib
+import io
+import os
+import shutil
+import site
+import sys
+import tempfile
+
+from filelock import FileLock
+
+
+@contextlib.contextmanager
+def tempdir(cd=lambda dir: None, **kwargs):
+    temp_dir = tempfile.mkdtemp(**kwargs)
+    orig_dir = os.getcwd()
+    try:
+        cd(temp_dir)
+        yield temp_dir
+    finally:
+        cd(orig_dir)
+        shutil.rmtree(temp_dir)
+
+
+@contextlib.contextmanager
+def environment(**replacements):
+    """
+    In a context, patch the environment with replacements. Pass None values
+    to clear the values.
+    """
+    saved = dict((key, os.environ[key]) for key in replacements if key in os.environ)
+
+    # remove values that are null
+    remove = (key for (key, value) in replacements.items() if value is None)
+    for key in list(remove):
+        os.environ.pop(key, None)
+        replacements.pop(key)
+
+    os.environ.update(replacements)
+
+    try:
+        yield saved
+    finally:
+        for key in replacements:
+            os.environ.pop(key, None)
+        os.environ.update(saved)
+
+
+@contextlib.contextmanager
+def quiet():
+    """
+    Redirect stdout/stderr to StringIO objects to prevent console output from
+    distutils commands.
+    """
+
+    old_stdout = sys.stdout
+    old_stderr = sys.stderr
+    new_stdout = sys.stdout = io.StringIO()
+    new_stderr = sys.stderr = io.StringIO()
+    try:
+        yield new_stdout, new_stderr
+    finally:
+        new_stdout.seek(0)
+        new_stderr.seek(0)
+        sys.stdout = old_stdout
+        sys.stderr = old_stderr
+
+
+@contextlib.contextmanager
+def save_user_site_setting():
+    saved = site.ENABLE_USER_SITE
+    try:
+        yield saved
+    finally:
+        site.ENABLE_USER_SITE = saved
+
+
+@contextlib.contextmanager
+def save_pkg_resources_state():
+    import pkg_resources
+
+    pr_state = pkg_resources.__getstate__()
+    # also save sys.path
+    sys_path = sys.path[:]
+    try:
+        yield pr_state, sys_path
+    finally:
+        sys.path[:] = sys_path
+        pkg_resources.__setstate__(pr_state)
+
+
+@contextlib.contextmanager
+def suppress_exceptions(*excs):
+    try:
+        yield
+    except excs:
+        pass
+
+
+def multiproc(request):
+    """
+    Return True if running under xdist and multiple
+    workers are used.
+    """
+    try:
+        worker_id = request.getfixturevalue('worker_id')
+    except Exception:
+        return False
+    return worker_id != 'master'
+
+
+@contextlib.contextmanager
+def session_locked_tmp_dir(request, tmp_path_factory, name):
+    """Uses a file lock to guarantee only one worker can access a temp dir"""
+    # get the temp directory shared by all workers
+    base = tmp_path_factory.getbasetemp()
+    shared_dir = base.parent if multiproc(request) else base
+
+    locked_dir = shared_dir / name
+    with FileLock(locked_dir.with_suffix(".lock")):
+        # ^-- prevent multiple workers to access the directory at once
+        locked_dir.mkdir(exist_ok=True, parents=True)
+        yield locked_dir
+
+
+@contextlib.contextmanager
+def save_paths():
+    """Make sure ``sys.path``, ``sys.meta_path`` and ``sys.path_hooks`` are preserved"""
+    prev = sys.path[:], sys.meta_path[:], sys.path_hooks[:]
+
+    try:
+        yield
+    finally:
+        sys.path, sys.meta_path, sys.path_hooks = prev
+
+
+@contextlib.contextmanager
+def save_sys_modules():
+    """Make sure initial ``sys.modules`` is preserved"""
+    prev_modules = sys.modules
+
+    try:
+        sys.modules = sys.modules.copy()
+        yield
+    finally:
+        sys.modules = prev_modules

rl/Lib/site-packages/setuptools/tests/environment.py

@@ -0,0 +1,95 @@
+import os
+import subprocess
+import sys
+import unicodedata
+from subprocess import PIPE as _PIPE, Popen as _Popen
+
+import jaraco.envs
+
+
+class VirtualEnv(jaraco.envs.VirtualEnv):
+    name = '.env'
+    # Some version of PyPy will import distutils on startup, implicitly
+    # importing setuptools, and thus leading to BackendInvalid errors
+    # when upgrading Setuptools. Bypass this behavior by avoiding the
+    # early availability and need to upgrade.
+    create_opts = ['--no-setuptools']
+
+    def run(self, cmd, *args, **kwargs):
+        cmd = [self.exe(cmd[0])] + cmd[1:]
+        kwargs = {"cwd": self.root, "encoding": "utf-8", **kwargs}  # Allow overriding
+        # In some environments (eg. downstream distro packaging), where:
+        # - tox isn't used to run tests and
+        # - PYTHONPATH is set to point to a specific setuptools codebase and
+        # - no custom env is explicitly set by a test
+        # PYTHONPATH will leak into the spawned processes.
+        # In that case tests look for module in the wrong place (on PYTHONPATH).
+        # Unless the test sets its own special env, pass a copy of the existing
+        # environment with removed PYTHONPATH to the subprocesses.
+        if "env" not in kwargs:
+            env = dict(os.environ)
+            if "PYTHONPATH" in env:
+                del env["PYTHONPATH"]
+            kwargs["env"] = env
+        return subprocess.check_output(cmd, *args, **kwargs)
+
+
+def _which_dirs(cmd):
+    result = set()
+    for path in os.environ.get('PATH', '').split(os.pathsep):
+        filename = os.path.join(path, cmd)
+        if os.access(filename, os.X_OK):
+            result.add(path)
+    return result
+
+
+def run_setup_py(cmd, pypath=None, path=None, data_stream=0, env=None):
+    """
+    Execution command for tests, separate from those used by the
+    code directly to prevent accidental behavior issues
+    """
+    if env is None:
+        env = dict()
+        for envname in os.environ:
+            env[envname] = os.environ[envname]
+
+    # override the python path if needed
+    if pypath is not None:
+        env["PYTHONPATH"] = pypath
+
+    # override the execution path if needed
+    if path is not None:
+        env["PATH"] = path
+    if not env.get("PATH", ""):
+        env["PATH"] = _which_dirs("tar").union(_which_dirs("gzip"))
+        env["PATH"] = os.pathsep.join(env["PATH"])
+
+    cmd = [sys.executable, "setup.py"] + list(cmd)
+
+    # https://bugs.python.org/issue8557
+    shell = sys.platform == 'win32'
+
+    try:
+        proc = _Popen(
+            cmd,
+            stdout=_PIPE,
+            stderr=_PIPE,
+            shell=shell,
+            env=env,
+            encoding="utf-8",
+        )
+
+        if isinstance(data_stream, tuple):
+            data_stream = slice(*data_stream)
+        data = proc.communicate()[data_stream]
+    except OSError:
+        return 1, ''
+
+    # decode the console string if needed
+    if hasattr(data, "decode"):
+        # use the default encoding
+        data = data.decode()
+        data = unicodedata.normalize('NFC', data)
+
+    # communicate calls wait()
+    return proc.returncode, data

rl/Lib/site-packages/setuptools/tests/fixtures.py

@@ -0,0 +1,157 @@
+import contextlib
+import os
+import subprocess
+import sys
+from pathlib import Path
+
+import path
+import pytest
+
+from . import contexts, environment
+
+
+@pytest.fixture
+def user_override(monkeypatch):
+    """
+    Override site.USER_BASE and site.USER_SITE with temporary directories in
+    a context.
+    """
+    with contexts.tempdir() as user_base:
+        monkeypatch.setattr('site.USER_BASE', user_base)
+        with contexts.tempdir() as user_site:
+            monkeypatch.setattr('site.USER_SITE', user_site)
+            with contexts.save_user_site_setting():
+                yield
+
+
+@pytest.fixture
+def tmpdir_cwd(tmpdir):
+    with tmpdir.as_cwd() as orig:
+        yield orig
+
+
+@pytest.fixture(autouse=True, scope="session")
+def workaround_xdist_376(request):
+    """
+    Workaround pytest-dev/pytest-xdist#376
+
+    ``pytest-xdist`` tends to inject '' into ``sys.path``,
+    which may break certain isolation expectations.
+    Remove the entry so the import
+    machinery behaves the same irrespective of xdist.
+    """
+    if not request.config.pluginmanager.has_plugin('xdist'):
+        return
+
+    with contextlib.suppress(ValueError):
+        sys.path.remove('')
+
+
+@pytest.fixture
+def sample_project(tmp_path):
+    """
+    Clone the 'sampleproject' and return a path to it.
+    """
+    cmd = ['git', 'clone', 'https://github.com/pypa/sampleproject']
+    try:
+        subprocess.check_call(cmd, cwd=str(tmp_path))
+    except Exception:
+        pytest.skip("Unable to clone sampleproject")
+    return tmp_path / 'sampleproject'
+
+
+# sdist and wheel artifacts should be stable across a round of tests
+# so we can build them once per session and use the files as "readonly"
+
+# In the case of setuptools, building the wheel without sdist may cause
+# it to contain the `build` directory, and therefore create situations with
+# `setuptools/build/lib/build/lib/...`. To avoid that, build both artifacts at once.
+
+
+def _build_distributions(tmp_path_factory, request):
+    with contexts.session_locked_tmp_dir(
+        request, tmp_path_factory, "dist_build"
+    ) as tmp:  # pragma: no cover
+        sdist = next(tmp.glob("*.tar.gz"), None)
+        wheel = next(tmp.glob("*.whl"), None)
+        if sdist and wheel:
+            return (sdist, wheel)
+
+        # Sanity check: should not create recursive setuptools/build/lib/build/lib/...
+        assert not Path(request.config.rootdir, "build/lib/build").exists()
+
+        subprocess.check_output([
+            sys.executable,
+            "-m",
+            "build",
+            "--outdir",
+            str(tmp),
+            str(request.config.rootdir),
+        ])
+
+        # Sanity check: should not create recursive setuptools/build/lib/build/lib/...
+        assert not Path(request.config.rootdir, "build/lib/build").exists()
+
+        return next(tmp.glob("*.tar.gz")), next(tmp.glob("*.whl"))
+
+
+@pytest.fixture(scope="session")
+def setuptools_sdist(tmp_path_factory, request):
+    prebuilt = os.getenv("PRE_BUILT_SETUPTOOLS_SDIST")
+    if prebuilt and os.path.exists(prebuilt):  # pragma: no cover
+        return Path(prebuilt).resolve()
+
+    sdist, _ = _build_distributions(tmp_path_factory, request)
+    return sdist
+
+
+@pytest.fixture(scope="session")
+def setuptools_wheel(tmp_path_factory, request):
+    prebuilt = os.getenv("PRE_BUILT_SETUPTOOLS_WHEEL")
+    if prebuilt and os.path.exists(prebuilt):  # pragma: no cover
+        return Path(prebuilt).resolve()
+
+    _, wheel = _build_distributions(tmp_path_factory, request)
+    return wheel
+
+
+@pytest.fixture
+def venv(tmp_path, setuptools_wheel):
+    """Virtual env with the version of setuptools under test installed"""
+    env = environment.VirtualEnv()
+    env.root = path.Path(tmp_path / 'venv')
+    env.create_opts = ['--no-setuptools', '--wheel=bundle']
+    # TODO: Use `--no-wheel` when setuptools implements its own bdist_wheel
+    env.req = str(setuptools_wheel)
+    # In some environments (eg. downstream distro packaging),
+    # where tox isn't used to run tests and PYTHONPATH is set to point to
+    # a specific setuptools codebase, PYTHONPATH will leak into the spawned
+    # processes.
+    # env.create() should install the just created setuptools
+    # wheel, but it doesn't if it finds another existing matching setuptools
+    # installation present on PYTHONPATH:
+    # `setuptools is already installed with the same version as the provided
+    # wheel. Use --force-reinstall to force an installation of the wheel.`
+    # This prevents leaking PYTHONPATH to the created environment.
+    with contexts.environment(PYTHONPATH=None):
+        return env.create()
+
+
+@pytest.fixture
+def venv_without_setuptools(tmp_path):
+    """Virtual env without any version of setuptools installed"""
+    env = environment.VirtualEnv()
+    env.root = path.Path(tmp_path / 'venv_without_setuptools')
+    env.create_opts = ['--no-setuptools', '--no-wheel']
+    env.ensure_env()
+    return env
+
+
+@pytest.fixture
+def bare_venv(tmp_path):
+    """Virtual env without any common packages installed"""
+    env = environment.VirtualEnv()
+    env.root = path.Path(tmp_path / 'bare_venv')
+    env.create_opts = ['--no-setuptools', '--no-pip', '--no-wheel', '--no-seed']
+    env.ensure_env()
+    return env

rl/Lib/site-packages/setuptools/tests/indexes/test_links_priority/external.html

@@ -0,0 +1,3 @@
+<html><body>
+<a href="/foobar-0.1.tar.gz#md5=1__bad_md5___">bad old link</a>
+</body></html>

rl/Lib/site-packages/setuptools/tests/indexes/test_links_priority/simple/foobar/index.html

@@ -0,0 +1,4 @@
+<html><body>
+<a href="/foobar-0.1.tar.gz#md5=0_correct_md5">foobar-0.1.tar.gz</a><br/>
+<a href="../../external.html" rel="homepage">external homepage</a><br/>
+</body></html>

rl/Lib/site-packages/setuptools/tests/integration/helpers.py

@@ -0,0 +1,77 @@
+"""Reusable functions and classes for different types of integration tests.
+
+For example ``Archive`` can be used to check the contents of distribution built
+with setuptools, and ``run`` will always try to be as verbose as possible to
+facilitate debugging.
+"""
+
+import os
+import subprocess
+import tarfile
+from pathlib import Path
+from zipfile import ZipFile
+
+
+def run(cmd, env=None):
+    r = subprocess.run(
+        cmd,
+        capture_output=True,
+        text=True,
+        encoding="utf-8",
+        env={**os.environ, **(env or {})},
+        # ^-- allow overwriting instead of discarding the current env
+    )
+
+    out = r.stdout + "\n" + r.stderr
+    # pytest omits stdout/err by default, if the test fails they help debugging
+    print("~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~")
+    print(f"Command: {cmd}\nreturn code: {r.returncode}\n\n{out}")
+
+    if r.returncode == 0:
+        return out
+    raise subprocess.CalledProcessError(r.returncode, cmd, r.stdout, r.stderr)
+
+
+class Archive:
+    """Compatibility layer for ZipFile/Info and TarFile/Info"""
+
+    def __init__(self, filename):
+        self._filename = filename
+        if filename.endswith("tar.gz"):
+            self._obj = tarfile.open(filename, "r:gz")
+        elif filename.endswith("zip"):
+            self._obj = ZipFile(filename)
+        else:
+            raise ValueError(f"{filename} doesn't seem to be a zip or tar.gz")
+
+    def __iter__(self):
+        if hasattr(self._obj, "infolist"):
+            return iter(self._obj.infolist())
+        return iter(self._obj)
+
+    def get_name(self, zip_or_tar_info):
+        if hasattr(zip_or_tar_info, "filename"):
+            return zip_or_tar_info.filename
+        return zip_or_tar_info.name
+
+    def get_content(self, zip_or_tar_info):
+        if hasattr(self._obj, "extractfile"):
+            content = self._obj.extractfile(zip_or_tar_info)
+            if content is None:
+                msg = f"Invalid {zip_or_tar_info.name} in {self._filename}"
+                raise ValueError(msg)
+            return str(content.read(), "utf-8")
+        return str(self._obj.read(zip_or_tar_info), "utf-8")
+
+
+def get_sdist_members(sdist_path):
+    with tarfile.open(sdist_path, "r:gz") as tar:
+        files = [Path(f) for f in tar.getnames()]
+    # remove root folder
+    relative_files = ("/".join(f.parts[1:]) for f in files)
+    return {f for f in relative_files if f}
+
+
+def get_wheel_members(wheel_path):
+    with ZipFile(wheel_path) as zipfile:
+        return set(zipfile.namelist())

rl/Lib/site-packages/setuptools/tests/integration/test_pip_install_sdist.py

@@ -0,0 +1,224 @@
+# https://github.com/python/mypy/issues/16936
+# mypy: disable-error-code="has-type"
+"""Integration tests for setuptools that focus on building packages via pip.
+
+The idea behind these tests is not to exhaustively check all the possible
+combinations of packages, operating systems, supporting libraries, etc, but
+rather check a limited number of popular packages and how they interact with
+the exposed public API. This way if any change in API is introduced, we hope to
+identify backward compatibility problems before publishing a release.
+
+The number of tested packages is purposefully kept small, to minimise duration
+and the associated maintenance cost (changes in the way these packages define
+their build process may require changes in the tests).
+"""
+
+import json
+import os
+import shutil
+import sys
+from enum import Enum
+from glob import glob
+from hashlib import md5
+from urllib.request import urlopen
+
+import pytest
+from packaging.requirements import Requirement
+
+from .helpers import Archive, run
+
+pytestmark = pytest.mark.integration
+
+
+(LATEST,) = Enum("v", "LATEST")  # type: ignore[misc] # https://github.com/python/mypy/issues/16936
+"""Default version to be checked"""
+# There are positive and negative aspects of checking the latest version of the
+# packages.
+# The main positive aspect is that the latest version might have already
+# removed the use of APIs deprecated in previous releases of setuptools.
+
+
+# Packages to be tested:
+# (Please notice the test environment cannot support EVERY library required for
+# compiling binary extensions. In Ubuntu/Debian nomenclature, we only assume
+# that `build-essential`, `gfortran` and `libopenblas-dev` are installed,
+# due to their relevance to the numerical/scientific programming ecosystem)
+EXAMPLES = [
+    ("pip", LATEST),  # just in case...
+    ("pytest", LATEST),  # uses setuptools_scm
+    ("mypy", LATEST),  # custom build_py + ext_modules
+    # --- Popular packages: https://hugovk.github.io/top-pypi-packages/ ---
+    ("botocore", LATEST),
+    ("kiwisolver", LATEST),  # build_ext
+    ("brotli", LATEST),  # not in the list but used by urllib3
+    ("pyyaml", LATEST),  # cython + custom build_ext + custom distclass
+    ("charset-normalizer", LATEST),  # uses mypyc, used by aiohttp
+    ("protobuf", LATEST),
+    ("requests", LATEST),
+    ("celery", LATEST),
+    # When adding packages to this list, make sure they expose a `__version__`
+    # attribute, or modify the tests below
+]
+
+
+# Some packages have "optional" dependencies that modify their build behaviour
+# and are not listed in pyproject.toml, others still use `setup_requires`
+EXTRA_BUILD_DEPS = {
+    "pyyaml": ("Cython<3.0",),  # constraint to avoid errors
+    "charset-normalizer": ("mypy>=1.4.1",),  # no pyproject.toml available
+}
+
+EXTRA_ENV_VARS = {
+    "pyyaml": {"PYYAML_FORCE_CYTHON": "1"},
+    "charset-normalizer": {"CHARSET_NORMALIZER_USE_MYPYC": "1"},
+}
+
+IMPORT_NAME = {
+    "pyyaml": "yaml",
+    "protobuf": "google.protobuf",
+}
+
+
+VIRTUALENV = (sys.executable, "-m", "virtualenv")
+
+
+# By default, pip will try to build packages in isolation (PEP 517), which
+# means it will download the previous stable version of setuptools.
+# `pip` flags can avoid that (the version of setuptools under test
+# should be the one to be used)
+INSTALL_OPTIONS = (
+    "--ignore-installed",
+    "--no-build-isolation",
+    # Omit "--no-binary :all:" the sdist is supplied directly.
+    # Allows dependencies as wheels.
+)
+# The downside of `--no-build-isolation` is that pip will not download build
+# dependencies. The test script will have to also handle that.
+
+
+@pytest.fixture
+def venv_python(tmp_path):
+    run([*VIRTUALENV, str(tmp_path / ".venv")])
+    possible_path = (str(p.parent) for p in tmp_path.glob(".venv/*/python*"))
+    return shutil.which("python", path=os.pathsep.join(possible_path))
+
+
+@pytest.fixture(autouse=True)
+def _prepare(tmp_path, venv_python, monkeypatch, request):
+    download_path = os.getenv("DOWNLOAD_PATH", str(tmp_path))
+    os.makedirs(download_path, exist_ok=True)
+
+    # Environment vars used for building some of the packages
+    monkeypatch.setenv("USE_MYPYC", "1")
+
+    def _debug_info():
+        # Let's provide the maximum amount of information possible in the case
+        # it is necessary to debug the tests directly from the CI logs.
+        print("~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~")
+        print("Temporary directory:")
+        map(print, tmp_path.glob("*"))
+        print("Virtual environment:")
+        run([venv_python, "-m", "pip", "freeze"])
+
+    request.addfinalizer(_debug_info)
+
+
+@pytest.mark.parametrize('package, version', EXAMPLES)
+@pytest.mark.uses_network
+def test_install_sdist(package, version, tmp_path, venv_python, setuptools_wheel):
+    venv_pip = (venv_python, "-m", "pip")
+    sdist = retrieve_sdist(package, version, tmp_path)
+    deps = build_deps(package, sdist)
+    if deps:
+        print("~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~")
+        print("Dependencies:", deps)
+        run([*venv_pip, "install", *deps])
+
+    # Use a virtualenv to simulate PEP 517 isolation
+    # but install fresh setuptools wheel to ensure the version under development
+    env = EXTRA_ENV_VARS.get(package, {})
+    run([*venv_pip, "install", "--force-reinstall", setuptools_wheel])
+    run([*venv_pip, "install", *INSTALL_OPTIONS, sdist], env)
+
+    # Execute a simple script to make sure the package was installed correctly
+    pkg = IMPORT_NAME.get(package, package).replace("-", "_")
+    script = f"import {pkg}; print(getattr({pkg}, '__version__', 0))"
+    run([venv_python, "-c", script])
+
+
+# ---- Helper Functions ----
+
+
+def retrieve_sdist(package, version, tmp_path):
+    """Either use cached sdist file or download it from PyPI"""
+    # `pip download` cannot be used due to
+    # https://github.com/pypa/pip/issues/1884
+    # https://discuss.python.org/t/pep-625-file-name-of-a-source-distribution/4686
+    # We have to find the correct distribution file and download it
+    download_path = os.getenv("DOWNLOAD_PATH", str(tmp_path))
+    dist = retrieve_pypi_sdist_metadata(package, version)
+
+    # Remove old files to prevent cache to grow indefinitely
+    for file in glob(os.path.join(download_path, f"{package}*")):
+        if dist["filename"] != file:
+            os.unlink(file)
+
+    dist_file = os.path.join(download_path, dist["filename"])
+    if not os.path.exists(dist_file):
+        download(dist["url"], dist_file, dist["md5_digest"])
+    return dist_file
+
+
+def retrieve_pypi_sdist_metadata(package, version):
+    # https://warehouse.pypa.io/api-reference/json.html
+    id_ = package if version is LATEST else f"{package}/{version}"
+    with urlopen(f"https://pypi.org/pypi/{id_}/json") as f:
+        metadata = json.load(f)
+
+    if metadata["info"]["yanked"]:
+        raise ValueError(f"Release for {package} {version} was yanked")
+
+    version = metadata["info"]["version"]
+    release = metadata["releases"][version] if version is LATEST else metadata["urls"]
+    (sdist,) = filter(lambda d: d["packagetype"] == "sdist", release)
+    return sdist
+
+
+def download(url, dest, md5_digest):
+    with urlopen(url) as f:
+        data = f.read()
+
+    assert md5(data).hexdigest() == md5_digest
+
+    with open(dest, "wb") as f:
+        f.write(data)
+
+    assert os.path.exists(dest)
+
+
+def build_deps(package, sdist_file):
+    """Find out what are the build dependencies for a package.
+
+    "Manually" install them, since pip will not install build
+    deps with `--no-build-isolation`.
+    """
+    # delay importing, since pytest discovery phase may hit this file from a
+    # testenv without tomli
+    from setuptools.compat.py310 import tomllib
+
+    archive = Archive(sdist_file)
+    info = tomllib.loads(_read_pyproject(archive))
+    deps = info.get("build-system", {}).get("requires", [])
+    deps += EXTRA_BUILD_DEPS.get(package, [])
+    # Remove setuptools from requirements (and deduplicate)
+    requirements = {Requirement(d).name: d for d in deps}
+    return [v for k, v in requirements.items() if k != "setuptools"]
+
+
+def _read_pyproject(archive):
+    contents = (
+        archive.get_content(member)
+        for member in archive
+        if os.path.basename(archive.get_name(member)) == "pyproject.toml"
+    )
+    return next(contents, "")

rl/Lib/site-packages/setuptools/tests/mod_with_constant.py

@@ -0,0 +1 @@
+value = 'three, sir!'

rl/Lib/site-packages/setuptools/tests/namespaces.py

@@ -0,0 +1,90 @@
+import ast
+import json
+import textwrap
+from pathlib import Path
+
+
+def iter_namespace_pkgs(namespace):
+    parts = namespace.split(".")
+    for i in range(len(parts)):
+        yield ".".join(parts[: i + 1])
+
+
+def build_namespace_package(tmpdir, name, version="1.0", impl="pkg_resources"):
+    src_dir = tmpdir / name
+    src_dir.mkdir()
+    setup_py = src_dir / 'setup.py'
+    namespace, _, rest = name.rpartition('.')
+    namespaces = list(iter_namespace_pkgs(namespace))
+    setup_args = {
+        "name": name,
+        "version": version,
+        "packages": namespaces,
+    }
+
+    if impl == "pkg_resources":
+        tmpl = '__import__("pkg_resources").declare_namespace(__name__)'
+        setup_args["namespace_packages"] = namespaces
+    elif impl == "pkgutil":
+        tmpl = '__path__ = __import__("pkgutil").extend_path(__path__, __name__)'
+    else:
+        raise ValueError(f"Cannot recognise {impl=} when creating namespaces")
+
+    args = json.dumps(setup_args, indent=4)
+    assert ast.literal_eval(args)  # ensure it is valid Python
+
+    script = textwrap.dedent(
+        """\
+        import setuptools
+        args = {args}
+        setuptools.setup(**args)
+        """
+    ).format(args=args)
+    setup_py.write_text(script, encoding='utf-8')
+
+    ns_pkg_dir = Path(src_dir, namespace.replace(".", "/"))
+    ns_pkg_dir.mkdir(parents=True)
+
+    for ns in namespaces:
+        pkg_init = src_dir / ns.replace(".", "/") / '__init__.py'
+        pkg_init.write_text(tmpl, encoding='utf-8')
+
+    pkg_mod = ns_pkg_dir / (rest + '.py')
+    some_functionality = 'name = {rest!r}'.format(**locals())
+    pkg_mod.write_text(some_functionality, encoding='utf-8')
+    return src_dir
+
+
+def build_pep420_namespace_package(tmpdir, name):
+    src_dir = tmpdir / name
+    src_dir.mkdir()
+    pyproject = src_dir / "pyproject.toml"
+    namespace, _, rest = name.rpartition(".")
+    script = f"""\
+        [build-system]
+        requires = ["setuptools"]
+        build-backend = "setuptools.build_meta"
+
+        [project]
+        name = "{name}"
+        version = "3.14159"
+        """
+    pyproject.write_text(textwrap.dedent(script), encoding='utf-8')
+    ns_pkg_dir = Path(src_dir, namespace.replace(".", "/"))
+    ns_pkg_dir.mkdir(parents=True)
+    pkg_mod = ns_pkg_dir / (rest + ".py")
+    some_functionality = f"name = {rest!r}"
+    pkg_mod.write_text(some_functionality, encoding='utf-8')
+    return src_dir
+
+
+def make_site_dir(target):
+    """
+    Add a sitecustomize.py module in target to cause
+    target to be added to site dirs such that .pth files
+    are processed there.
+    """
+    sc = target / 'sitecustomize.py'
+    target_str = str(target)
+    tmpl = '__import__("site").addsitedir({target_str!r})'
+    sc.write_text(tmpl.format(**locals()), encoding='utf-8')

rl/Lib/site-packages/setuptools/tests/script-with-bom.py

@@ -0,0 +1 @@
+result = 'passed'

rl/Lib/site-packages/setuptools/tests/server.py

@@ -0,0 +1,86 @@
+"""Basic http server for tests to simulate PyPI or custom indexes"""
+
+import http.server
+import os
+import threading
+import time
+import urllib.parse
+import urllib.request
+
+
+class IndexServer(http.server.HTTPServer):
+    """Basic single-threaded http server simulating a package index
+
+    You can use this server in unittest like this::
+        s = IndexServer()
+        s.start()
+        index_url = s.base_url() + 'mytestindex'
+        # do some test requests to the index
+        # The index files should be located in setuptools/tests/indexes
+        s.stop()
+    """
+
+    def __init__(
+        self,
+        server_address=('', 0),
+        RequestHandlerClass=http.server.SimpleHTTPRequestHandler,
+    ):
+        http.server.HTTPServer.__init__(self, server_address, RequestHandlerClass)
+        self._run = True
+
+    def start(self):
+        self.thread = threading.Thread(target=self.serve_forever)
+        self.thread.start()
+
+    def stop(self):
+        "Stop the server"
+
+        # Let the server finish the last request and wait for a new one.
+        time.sleep(0.1)
+
+        self.shutdown()
+        self.thread.join()
+        self.socket.close()
+
+    def base_url(self):
+        port = self.server_port
+        return 'http://127.0.0.1:%s/setuptools/tests/indexes/' % port
+
+
+class RequestRecorder(http.server.BaseHTTPRequestHandler):
+    def do_GET(self):
+        requests = vars(self.server).setdefault('requests', [])
+        requests.append(self)
+        self.send_response(200, 'OK')
+
+
+class MockServer(http.server.HTTPServer, threading.Thread):
+    """
+    A simple HTTP Server that records the requests made to it.
+    """
+
+    def __init__(self, server_address=('', 0), RequestHandlerClass=RequestRecorder):
+        http.server.HTTPServer.__init__(self, server_address, RequestHandlerClass)
+        threading.Thread.__init__(self)
+        self.daemon = True
+        self.requests = []
+
+    def run(self):
+        self.serve_forever()
+
+    @property
+    def netloc(self):
+        return 'localhost:%s' % self.server_port
+
+    @property
+    def url(self):
+        return 'http://%s/' % self.netloc
+
+
+def path_to_url(path, authority=None):
+    """Convert a path to a file: URL."""
+    path = os.path.normpath(os.path.abspath(path))
+    base = 'file:'
+    if authority is not None:
+        base += '//' + authority
+    return urllib.parse.urljoin(base, urllib.request.pathname2url(path))

rl/Lib/site-packages/setuptools/tests/test_archive_util.py

@@ -0,0 +1,36 @@
+import io
+import tarfile
+
+import pytest
+
+from setuptools import archive_util
+
+
+@pytest.fixture
+def tarfile_with_unicode(tmpdir):
+    """
+    Create a tarfile containing only a file whose name is
+    a zero byte file called testimäge.png.
+    """
+    tarobj = io.BytesIO()
+
+    with tarfile.open(fileobj=tarobj, mode="w:gz") as tgz:
+        data = b""
+
+        filename = "testimäge.png"
+
+        t = tarfile.TarInfo(filename)
+        t.size = len(data)
+
+        tgz.addfile(t, io.BytesIO(data))
+
+    target = tmpdir / 'unicode-pkg-1.0.tar.gz'
+    with open(str(target), mode='wb') as tf:
+        tf.write(tarobj.getvalue())
+    return str(target)
+
+
+@pytest.mark.xfail(reason="#710 and #712")
+def test_unicode_files(tarfile_with_unicode, tmpdir):
+    target = tmpdir / 'out'
+    archive_util.unpack_archive(tarfile_with_unicode, str(target))

rl/Lib/site-packages/setuptools/tests/test_bdist_deprecations.py

@@ -0,0 +1,28 @@
+"""develop tests"""
+
+import sys
+from unittest import mock
+
+import pytest
+
+from setuptools import SetuptoolsDeprecationWarning
+from setuptools.dist import Distribution
+
+
+@pytest.mark.skipif(sys.platform == 'win32', reason='non-Windows only')
+@pytest.mark.xfail(reason="bdist_rpm is long deprecated, should we remove it? #1988")
+@mock.patch('distutils.command.bdist_rpm.bdist_rpm')
+def test_bdist_rpm_warning(distutils_cmd, tmpdir_cwd):
+    dist = Distribution(
+        dict(
+            script_name='setup.py',
+            script_args=['bdist_rpm'],
+            name='foo',
+            py_modules=['hi'],
+        )
+    )
+    dist.parse_command_line()
+    with pytest.warns(SetuptoolsDeprecationWarning):
+        dist.run_commands()
+
+    distutils_cmd.run.assert_called_once()

rl/Lib/site-packages/setuptools/tests/test_bdist_egg.py

@@ -0,0 +1,69 @@
+"""develop tests"""
+
+import os
+import re
+import zipfile
+
+import pytest
+
+from setuptools.dist import Distribution
+
+from . import contexts
+
+SETUP_PY = """\
+from setuptools import setup
+
+setup(py_modules=['hi'])
+"""
+
+
+@pytest.fixture(scope='function')
+def setup_context(tmpdir):
+    with (tmpdir / 'setup.py').open('w') as f:
+        f.write(SETUP_PY)
+    with (tmpdir / 'hi.py').open('w') as f:
+        f.write('1\n')
+    with tmpdir.as_cwd():
+        yield tmpdir
+
+
+class Test:
+    def test_bdist_egg(self, setup_context, user_override):
+        dist = Distribution(
+            dict(
+                script_name='setup.py',
+                script_args=['bdist_egg'],
+                name='foo',
+                py_modules=['hi'],
+            )
+        )
+        os.makedirs(os.path.join('build', 'src'))
+        with contexts.quiet():
+            dist.parse_command_line()
+            dist.run_commands()
+
+        # let's see if we got our egg link at the right place
+        [content] = os.listdir('dist')
+        assert re.match(r'foo-0.0.0-py[23].\d+.egg$', content)
+
+    @pytest.mark.xfail(
+        os.environ.get('PYTHONDONTWRITEBYTECODE', False),
+        reason="Byte code disabled",
+    )
+    def test_exclude_source_files(self, setup_context, user_override):
+        dist = Distribution(
+            dict(
+                script_name='setup.py',
+                script_args=['bdist_egg', '--exclude-source-files'],
+                py_modules=['hi'],
+            )
+        )
+        with contexts.quiet():
+            dist.parse_command_line()
+            dist.run_commands()
+        [dist_name] = os.listdir('dist')
+        dist_filename = os.path.join('dist', dist_name)
+        zip = zipfile.ZipFile(dist_filename)
+        names = list(zi.filename for zi in zip.filelist)
+        assert 'hi.pyc' in names
+        assert 'hi.py' not in names

rl/Lib/site-packages/setuptools/tests/test_bdist_wheel.py

@@ -0,0 +1,652 @@
+from __future__ import annotations
+
+import builtins
+import importlib
+import os.path
+import platform
+import shutil
+import stat
+import struct
+import sys
+import sysconfig
+from contextlib import suppress
+from inspect import cleandoc
+from unittest.mock import Mock
+from zipfile import ZipFile
+
+import jaraco.path
+import pytest
+from packaging import tags
+
+import setuptools
+from setuptools.command.bdist_wheel import (
+    bdist_wheel,
+    get_abi_tag,
+    remove_readonly,
+    remove_readonly_exc,
+)
+from setuptools.dist import Distribution
+from setuptools.warnings import SetuptoolsDeprecationWarning
+
+from distutils.core import run_setup
+
+DEFAULT_FILES = {
+    "dummy_dist-1.0.dist-info/top_level.txt",
+    "dummy_dist-1.0.dist-info/METADATA",
+    "dummy_dist-1.0.dist-info/WHEEL",
+    "dummy_dist-1.0.dist-info/RECORD",
+}
+DEFAULT_LICENSE_FILES = {
+    "LICENSE",
+    "LICENSE.txt",
+    "LICENCE",
+    "LICENCE.txt",
+    "COPYING",
+    "COPYING.md",
+    "NOTICE",
+    "NOTICE.rst",
+    "AUTHORS",
+    "AUTHORS.txt",
+}
+OTHER_IGNORED_FILES = {
+    "LICENSE~",
+    "AUTHORS~",
+}
+SETUPPY_EXAMPLE = """\
+from setuptools import setup
+
+setup(
+    name='dummy_dist',
+    version='1.0',
+)
+"""
+
+
+EXAMPLES = {
+    "dummy-dist": {
+        "setup.py": SETUPPY_EXAMPLE,
+        "licenses": {"DUMMYFILE": ""},
+        **dict.fromkeys(DEFAULT_LICENSE_FILES | OTHER_IGNORED_FILES, ""),
+    },
+    "simple-dist": {
+        "setup.py": cleandoc(
+            """
+            from setuptools import setup
+
+            setup(
+                name="simple.dist",
+                version="0.1",
+                description="A testing distribution \N{SNOWMAN}",
+                extras_require={"voting": ["beaglevote"]},
+            )
+            """
+        ),
+        "simpledist": "",
+    },
+    "complex-dist": {
+        "setup.py": cleandoc(
+            """
+            from setuptools import setup
+
+            setup(
+                name="complex-dist",
+                version="0.1",
+                description="Another testing distribution \N{SNOWMAN}",
+                long_description="Another testing distribution \N{SNOWMAN}",
+                author="Illustrious Author",
+                author_email="illustrious@example.org",
+                url="http://example.org/exemplary",
+                packages=["complexdist"],
+                setup_requires=["setuptools"],
+                install_requires=["quux", "splort"],
+                extras_require={"simple": ["simple.dist"]},
+                entry_points={
+                    "console_scripts": [
+                        "complex-dist=complexdist:main",
+                        "complex-dist2=complexdist:main",
+                    ],
+                },
+            )
+            """
+        ),
+        "complexdist": {"__init__.py": "def main(): return"},
+    },
+    "headers-dist": {
+        "setup.py": cleandoc(
+            """
+            from setuptools import setup
+
+            setup(
+                name="headers.dist",
+                version="0.1",
+                description="A distribution with headers",
+                headers=["header.h"],
+            )
+            """
+        ),
+        "headersdist.py": "",
+        "header.h": "",
+    },
+    "commasinfilenames-dist": {
+        "setup.py": cleandoc(
+            """
+            from setuptools import setup
+
+            setup(
+                name="testrepo",
+                version="0.1",
+                packages=["mypackage"],
+                description="A test package with commas in file names",
+                include_package_data=True,
+                package_data={"mypackage.data": ["*"]},
+            )
+            """
+        ),
+        "mypackage": {
+            "__init__.py": "",
+            "data": {"__init__.py": "", "1,2,3.txt": ""},
+        },
+        "testrepo-0.1.0": {
+            "mypackage": {"__init__.py": ""},
+        },
+    },
+    "unicode-dist": {
+        "setup.py": cleandoc(
+            """
+            from setuptools import setup
+
+            setup(
+                name="unicode.dist",
+                version="0.1",
+                description="A testing distribution \N{SNOWMAN}",
+                packages=["unicodedist"],
+                zip_safe=True,
+            )
+            """
+        ),
+        "unicodedist": {"__init__.py": "", "åäö_日本語.py": ""},
+    },
+    "utf8-metadata-dist": {
+        "setup.cfg": cleandoc(
+            """
+            [metadata]
+            name = utf8-metadata-dist
+            version = 42
+            author_email = "John X. Ãørçeč" <john@utf8.org>, Γαμα קּ 東 <gama@utf8.org>
+            long_description = file: README.rst
+            """
+        ),
+        "README.rst": "UTF-8 描述 説明",
+    },
+}
+
+
+if sys.platform != "win32":
+    # ABI3 extensions don't really work on Windows
+    EXAMPLES["abi3extension-dist"] = {
+        "setup.py": cleandoc(
+            """
+            from setuptools import Extension, setup
+
+            setup(
+                name="extension.dist",
+                version="0.1",
+                description="A testing distribution \N{SNOWMAN}",
+                ext_modules=[
+                    Extension(
+                        name="extension", sources=["extension.c"], py_limited_api=True
+                    )
+                ],
+            )
+            """
+        ),
+        "setup.cfg": "[bdist_wheel]\npy_limited_api=cp32",
+        "extension.c": "#define Py_LIMITED_API 0x03020000\n#include <Python.h>",
+    }
+
+
+def bdist_wheel_cmd(**kwargs):
+    """Run command in the same process so that it is easier to collect coverage"""
+    dist_obj = (
+        run_setup("setup.py", stop_after="init")
+        if os.path.exists("setup.py")
+        else Distribution({"script_name": "%%build_meta%%"})
+    )
+    dist_obj.parse_config_files()
+    cmd = bdist_wheel(dist_obj)
+    for attr, value in kwargs.items():
+        setattr(cmd, attr, value)
+    cmd.finalize_options()
+    return cmd
+
+
+def mkexample(tmp_path_factory, name):
+    basedir = tmp_path_factory.mktemp(name)
+    jaraco.path.build(EXAMPLES[name], prefix=str(basedir))
+    return basedir
+
+
+@pytest.fixture(scope="session")
+def wheel_paths(tmp_path_factory):
+    build_base = tmp_path_factory.mktemp("build")
+    dist_dir = tmp_path_factory.mktemp("dist")
+    for name in EXAMPLES:
+        example_dir = mkexample(tmp_path_factory, name)
+        build_dir = build_base / name
+        with jaraco.path.DirectoryStack().context(example_dir):
+            bdist_wheel_cmd(bdist_dir=str(build_dir), dist_dir=str(dist_dir)).run()
+
+    return sorted(str(fname) for fname in dist_dir.glob("*.whl"))
+
+
+@pytest.fixture
+def dummy_dist(tmp_path_factory):
+    return mkexample(tmp_path_factory, "dummy-dist")
+
+
+def test_no_scripts(wheel_paths):
+    """Make sure entry point scripts are not generated."""
+    path = next(path for path in wheel_paths if "complex_dist" in path)
+    for entry in ZipFile(path).infolist():
+        assert ".data/scripts/" not in entry.filename
+
+
+def test_unicode_record(wheel_paths):
+    path = next(path for path in wheel_paths if "unicode.dist" in path)
+    with ZipFile(path) as zf:
+        record = zf.read("unicode.dist-0.1.dist-info/RECORD")
+
+    assert "åäö_日本語.py".encode() in record
+
+
+UTF8_PKG_INFO = """\
+Metadata-Version: 2.1
+Name: helloworld
+Version: 42
+Author-email: "John X. Ãørçeč" <john@utf8.org>, Γαμα קּ 東 <gama@utf8.org>
+
+
+UTF-8 描述 説明
+"""
+
+
+def test_preserve_unicode_metadata(monkeypatch, tmp_path):
+    monkeypatch.chdir(tmp_path)
+    egginfo = tmp_path / "dummy_dist.egg-info"
+    distinfo = tmp_path / "dummy_dist.dist-info"
+
+    egginfo.mkdir()
+    (egginfo / "PKG-INFO").write_text(UTF8_PKG_INFO, encoding="utf-8")
+    (egginfo / "dependency_links.txt").touch()
+
+    class simpler_bdist_wheel(bdist_wheel):
+        """Avoid messing with setuptools/distutils internals"""
+
+        def __init__(self):
+            pass
+
+        @property
+        def license_paths(self):
+            return []
+
+    cmd_obj = simpler_bdist_wheel()
+    cmd_obj.egg2dist(egginfo, distinfo)
+
+    metadata = (distinfo / "METADATA").read_text(encoding="utf-8")
+    assert 'Author-email: "John X. Ãørçeč"' in metadata
+    assert "Γαμα קּ 東 " in metadata
+    assert "UTF-8 描述 説明" in metadata
+
+
+def test_licenses_default(dummy_dist, monkeypatch, tmp_path):
+    monkeypatch.chdir(dummy_dist)
+    bdist_wheel_cmd(bdist_dir=str(tmp_path)).run()
+    with ZipFile("dist/dummy_dist-1.0-py3-none-any.whl") as wf:
+        license_files = {
+            "dummy_dist-1.0.dist-info/" + fname for fname in DEFAULT_LICENSE_FILES
+        }
+        assert set(wf.namelist()) == DEFAULT_FILES | license_files
+
+
+def test_licenses_deprecated(dummy_dist, monkeypatch, tmp_path):
+    dummy_dist.joinpath("setup.cfg").write_text(
+        "[metadata]\nlicense_file=licenses/DUMMYFILE", encoding="utf-8"
+    )
+    monkeypatch.chdir(dummy_dist)
+
+    bdist_wheel_cmd(bdist_dir=str(tmp_path)).run()
+
+    with ZipFile("dist/dummy_dist-1.0-py3-none-any.whl") as wf:
+        license_files = {"dummy_dist-1.0.dist-info/DUMMYFILE"}
+        assert set(wf.namelist()) == DEFAULT_FILES | license_files
+
+
+@pytest.mark.parametrize(
+    "config_file, config",
+    [
+        ("setup.cfg", "[metadata]\nlicense_files=licenses/*\n  LICENSE"),
+        ("setup.cfg", "[metadata]\nlicense_files=licenses/*, LICENSE"),
+        (
+            "setup.py",
+            SETUPPY_EXAMPLE.replace(
+                ")", "  license_files=['licenses/DUMMYFILE', 'LICENSE'])"
+            ),
+        ),
+    ],
+)
+def test_licenses_override(dummy_dist, monkeypatch, tmp_path, config_file, config):
+    dummy_dist.joinpath(config_file).write_text(config, encoding="utf-8")
+    monkeypatch.chdir(dummy_dist)
+    bdist_wheel_cmd(bdist_dir=str(tmp_path)).run()
+    with ZipFile("dist/dummy_dist-1.0-py3-none-any.whl") as wf:
+        license_files = {
+            "dummy_dist-1.0.dist-info/" + fname for fname in {"DUMMYFILE", "LICENSE"}
+        }
+        assert set(wf.namelist()) == DEFAULT_FILES | license_files
+
+
+def test_licenses_disabled(dummy_dist, monkeypatch, tmp_path):
+    dummy_dist.joinpath("setup.cfg").write_text(
+        "[metadata]\nlicense_files=\n", encoding="utf-8"
+    )
+    monkeypatch.chdir(dummy_dist)
+    bdist_wheel_cmd(bdist_dir=str(tmp_path)).run()
+    with ZipFile("dist/dummy_dist-1.0-py3-none-any.whl") as wf:
+        assert set(wf.namelist()) == DEFAULT_FILES
+
+
+def test_build_number(dummy_dist, monkeypatch, tmp_path):
+    monkeypatch.chdir(dummy_dist)
+    bdist_wheel_cmd(bdist_dir=str(tmp_path), build_number="2").run()
+    with ZipFile("dist/dummy_dist-1.0-2-py3-none-any.whl") as wf:
+        filenames = set(wf.namelist())
+        assert "dummy_dist-1.0.dist-info/RECORD" in filenames
+        assert "dummy_dist-1.0.dist-info/METADATA" in filenames
+
+
+def test_universal_deprecated(dummy_dist, monkeypatch, tmp_path):
+    monkeypatch.chdir(dummy_dist)
+    with pytest.warns(SetuptoolsDeprecationWarning, match=".*universal is deprecated"):
+        bdist_wheel_cmd(bdist_dir=str(tmp_path), universal=True).run()
+
+    # For now we still respect the option
+    assert os.path.exists("dist/dummy_dist-1.0-py2.py3-none-any.whl")
+
+
+EXTENSION_EXAMPLE = """\
+#include <Python.h>
+
+static PyMethodDef methods[] = {
+  { NULL, NULL, 0, NULL }
+};
+
+static struct PyModuleDef module_def = {
+  PyModuleDef_HEAD_INIT,
+  "extension",
+  "Dummy extension module",
+  -1,
+  methods
+};
+
+PyMODINIT_FUNC PyInit_extension(void) {
+  return PyModule_Create(&module_def);
+}
+"""
+EXTENSION_SETUPPY = """\
+from __future__ import annotations
+
+from setuptools import Extension, setup
+
+setup(
+    name="extension.dist",
+    version="0.1",
+    description="A testing distribution \N{SNOWMAN}",
+    ext_modules=[Extension(name="extension", sources=["extension.c"])],
+)
+"""
+
+
+@pytest.mark.filterwarnings(
+    "once:Config variable '.*' is unset.*, Python ABI tag may be incorrect"
+)
+def test_limited_abi(monkeypatch, tmp_path, tmp_path_factory):
+    """Test that building a binary wheel with the limited ABI works."""
+    source_dir = tmp_path_factory.mktemp("extension_dist")
+    (source_dir / "setup.py").write_text(EXTENSION_SETUPPY, encoding="utf-8")
+    (source_dir / "extension.c").write_text(EXTENSION_EXAMPLE, encoding="utf-8")
+    build_dir = tmp_path.joinpath("build")
+    dist_dir = tmp_path.joinpath("dist")
+    monkeypatch.chdir(source_dir)
+    bdist_wheel_cmd(bdist_dir=str(build_dir), dist_dir=str(dist_dir)).run()
+
+
+def test_build_from_readonly_tree(dummy_dist, monkeypatch, tmp_path):
+    basedir = str(tmp_path.joinpath("dummy"))
+    shutil.copytree(str(dummy_dist), basedir)
+    monkeypatch.chdir(basedir)
+
+    # Make the tree read-only
+    for root, _dirs, files in os.walk(basedir):
+        for fname in files:
+            os.chmod(os.path.join(root, fname), stat.S_IREAD)
+
+    bdist_wheel_cmd().run()
+
+
+@pytest.mark.parametrize(
+    "option, compress_type",
+    list(bdist_wheel.supported_compressions.items()),
+    ids=list(bdist_wheel.supported_compressions),
+)
+def test_compression(dummy_dist, monkeypatch, tmp_path, option, compress_type):
+    monkeypatch.chdir(dummy_dist)
+    bdist_wheel_cmd(bdist_dir=str(tmp_path), compression=option).run()
+    with ZipFile("dist/dummy_dist-1.0-py3-none-any.whl") as wf:
+        filenames = set(wf.namelist())
+        assert "dummy_dist-1.0.dist-info/RECORD" in filenames
+        assert "dummy_dist-1.0.dist-info/METADATA" in filenames
+        for zinfo in wf.filelist:
+            assert zinfo.compress_type == compress_type
+
+
+def test_wheelfile_line_endings(wheel_paths):
+    for path in wheel_paths:
+        with ZipFile(path) as wf:
+            wheelfile = next(fn for fn in wf.filelist if fn.filename.endswith("WHEEL"))
+            wheelfile_contents = wf.read(wheelfile)
+            assert b"\r" not in wheelfile_contents
+
+
+def test_unix_epoch_timestamps(dummy_dist, monkeypatch, tmp_path):
+    monkeypatch.setenv("SOURCE_DATE_EPOCH", "0")
+    monkeypatch.chdir(dummy_dist)
+    bdist_wheel_cmd(bdist_dir=str(tmp_path), build_number="2a").run()
+    with ZipFile("dist/dummy_dist-1.0-2a-py3-none-any.whl") as wf:
+        for zinfo in wf.filelist:
+            assert zinfo.date_time >= (1980, 1, 1, 0, 0, 0)  # min epoch is used
+
+
+def test_get_abi_tag_windows(monkeypatch):
+    monkeypatch.setattr(tags, "interpreter_name", lambda: "cp")
+    monkeypatch.setattr(sysconfig, "get_config_var", lambda x: "cp313-win_amd64")
+    assert get_abi_tag() == "cp313"
+    monkeypatch.setattr(sys, "gettotalrefcount", lambda: 1, False)
+    assert get_abi_tag() == "cp313d"
+    monkeypatch.setattr(sysconfig, "get_config_var", lambda x: "cp313t-win_amd64")
+    assert get_abi_tag() == "cp313td"
+    monkeypatch.delattr(sys, "gettotalrefcount")
+    assert get_abi_tag() == "cp313t"
+
+
+def test_get_abi_tag_pypy_old(monkeypatch):
+    monkeypatch.setattr(tags, "interpreter_name", lambda: "pp")
+    monkeypatch.setattr(sysconfig, "get_config_var", lambda x: "pypy36-pp73")
+    assert get_abi_tag() == "pypy36_pp73"
+
+
+def test_get_abi_tag_pypy_new(monkeypatch):
+    monkeypatch.setattr(sysconfig, "get_config_var", lambda x: "pypy37-pp73-darwin")
+    monkeypatch.setattr(tags, "interpreter_name", lambda: "pp")
+    assert get_abi_tag() == "pypy37_pp73"
+
+
+def test_get_abi_tag_graalpy(monkeypatch):
+    monkeypatch.setattr(
+        sysconfig, "get_config_var", lambda x: "graalpy231-310-native-x86_64-linux"
+    )
+    monkeypatch.setattr(tags, "interpreter_name", lambda: "graalpy")
+    assert get_abi_tag() == "graalpy231_310_native"
+
+
+def test_get_abi_tag_fallback(monkeypatch):
+    monkeypatch.setattr(sysconfig, "get_config_var", lambda x: "unknown-python-310")
+    monkeypatch.setattr(tags, "interpreter_name", lambda: "unknown-python")
+    assert get_abi_tag() == "unknown_python_310"
+
+
+def test_platform_with_space(dummy_dist, monkeypatch):
+    """Ensure building on platforms with a space in the name succeed."""
+    monkeypatch.chdir(dummy_dist)
+    bdist_wheel_cmd(plat_name="isilon onefs").run()
+
+
+def test_rmtree_readonly(monkeypatch, tmp_path):
+    """Verify onerr works as expected"""
+
+    bdist_dir = tmp_path / "with_readonly"
+    bdist_dir.mkdir()
+    some_file = bdist_dir.joinpath("file.txt")
+    some_file.touch()
+    some_file.chmod(stat.S_IREAD)
+
+    expected_count = 1 if sys.platform.startswith("win") else 0
+
+    if sys.version_info < (3, 12):
+        count_remove_readonly = Mock(side_effect=remove_readonly)
+        shutil.rmtree(bdist_dir, onerror=count_remove_readonly)
+        assert count_remove_readonly.call_count == expected_count
+    else:
+        count_remove_readonly_exc = Mock(side_effect=remove_readonly_exc)
+        shutil.rmtree(bdist_dir, onexc=count_remove_readonly_exc)
+        assert count_remove_readonly_exc.call_count == expected_count
+
+    assert not bdist_dir.is_dir()
+
+
+def test_data_dir_with_tag_build(monkeypatch, tmp_path):
+    """
+    Setuptools allow authors to set PEP 440's local version segments
+    using ``egg_info.tag_build``. This should be reflected not only in the
+    ``.whl`` file name, but also in the ``.dist-info`` and ``.data`` dirs.
+    See pypa/setuptools#3997.
+    """
+    monkeypatch.chdir(tmp_path)
+    files = {
+        "setup.py": """
+            from setuptools import setup
+            setup(headers=["hello.h"])
+            """,
+        "setup.cfg": """
+            [metadata]
+            name = test
+            version = 1.0
+
+            [options.data_files]
+            hello/world = file.txt
+
+            [egg_info]
+            tag_build = +what
+            tag_date = 0
+            """,
+        "file.txt": "",
+        "hello.h": "",
+    }
+    for file, content in files.items():
+        with open(file, "w", encoding="utf-8") as fh:
+            fh.write(cleandoc(content))
+
+    bdist_wheel_cmd().run()
+
+    # Ensure .whl, .dist-info and .data contain the local segment
+    wheel_path = "dist/test-1.0+what-py3-none-any.whl"
+    assert os.path.exists(wheel_path)
+    entries = set(ZipFile(wheel_path).namelist())
+    for expected in (
+        "test-1.0+what.data/headers/hello.h",
+        "test-1.0+what.data/data/hello/world/file.txt",
+        "test-1.0+what.dist-info/METADATA",
+        "test-1.0+what.dist-info/WHEEL",
+    ):
+        assert expected in entries
+
+    for not_expected in (
+        "test.data/headers/hello.h",
+        "test-1.0.data/data/hello/world/file.txt",
+        "test.dist-info/METADATA",
+        "test-1.0.dist-info/WHEEL",
+    ):
+        assert not_expected not in entries
+
+
+@pytest.mark.parametrize(
+    "reported,expected",
+    [("linux-x86_64", "linux_i686"), ("linux-aarch64", "linux_armv7l")],
+)
+@pytest.mark.skipif(
+    platform.system() != "Linux", reason="Only makes sense to test on Linux"
+)
+def test_platform_linux32(reported, expected, monkeypatch):
+    monkeypatch.setattr(struct, "calcsize", lambda x: 4)
+    dist = setuptools.Distribution()
+    cmd = bdist_wheel(dist)
+    cmd.plat_name = reported
+    cmd.root_is_pure = False
+    _, _, actual = cmd.get_tag()
+    assert actual == expected
+
+
+def test_no_ctypes(monkeypatch) -> None:
+    def _fake_import(name: str, *args, **kwargs):
+        if name == "ctypes":
+            raise ModuleNotFoundError(f"No module named {name}")
+
+        return importlib.__import__(name, *args, **kwargs)
+
+    with suppress(KeyError):
+        monkeypatch.delitem(sys.modules, "wheel.macosx_libfile")
+
+    # Install an importer shim that refuses to load ctypes
+    monkeypatch.setattr(builtins, "__import__", _fake_import)
+    with pytest.raises(ModuleNotFoundError, match="No module named ctypes"):
+        import wheel.macosx_libfile  # noqa: F401
+
+    # Unload and reimport the bdist_wheel command module to make sure it won't try to
+    # import ctypes
+    monkeypatch.delitem(sys.modules, "setuptools.command.bdist_wheel")
+
+    import setuptools.command.bdist_wheel  # noqa: F401
+
+
+def test_dist_info_provided(dummy_dist, monkeypatch, tmp_path):
+    monkeypatch.chdir(dummy_dist)
+    distinfo = tmp_path / "dummy_dist.dist-info"
+
+    distinfo.mkdir()
+    (distinfo / "METADATA").write_text("name: helloworld", encoding="utf-8")
+
+    # We don't control the metadata. According to PEP-517, "The hook MAY also
+    # create other files inside this directory, and a build frontend MUST
+    # preserve".
+    (distinfo / "FOO").write_text("bar", encoding="utf-8")
+
+    bdist_wheel_cmd(bdist_dir=str(tmp_path), dist_info_dir=str(distinfo)).run()
+    expected = {
+        "dummy_dist-1.0.dist-info/FOO",
+        "dummy_dist-1.0.dist-info/RECORD",
+    }
+    with ZipFile("dist/dummy_dist-1.0-py3-none-any.whl") as wf:
+        files_found = set(wf.namelist())
+    # Check that all expected files are there.
+    assert expected - files_found == set()
+    # Make sure there is no accidental egg-info bleeding into the wheel.
+    assert not [path for path in files_found if 'egg-info' in str(path)]

rl/Lib/site-packages/setuptools/tests/test_build.py

@@ -0,0 +1,33 @@
+from setuptools import Command
+from setuptools.command.build import build
+from setuptools.dist import Distribution
+
+
+def test_distribution_gives_setuptools_build_obj(tmpdir_cwd):
+    """
+    Check that the setuptools Distribution uses the
+    setuptools specific build object.
+    """
+
+    dist = Distribution(
+        dict(
+            script_name='setup.py',
+            script_args=['build'],
+            packages=[],
+            package_data={'': ['path/*']},
+        )
+    )
+    assert isinstance(dist.get_command_obj("build"), build)
+
+
+class Subcommand(Command):
+    """Dummy command to be used in tests"""
+
+    def initialize_options(self):
+        pass
+
+    def finalize_options(self):
+        pass
+
+    def run(self):
+        raise NotImplementedError("just to check if the command runs")

rl/Lib/site-packages/setuptools/tests/test_build_clib.py

@@ -0,0 +1,84 @@
+import random
+from unittest import mock
+
+import pytest
+
+from setuptools.command.build_clib import build_clib
+from setuptools.dist import Distribution
+
+from distutils.errors import DistutilsSetupError
+
+
+class TestBuildCLib:
+    @mock.patch('setuptools.command.build_clib.newer_pairwise_group')
+    def test_build_libraries(self, mock_newer):
+        dist = Distribution()
+        cmd = build_clib(dist)
+
+        # this will be a long section, just making sure all
+        # exceptions are properly raised
+        libs = [('example', {'sources': 'broken.c'})]
+        with pytest.raises(DistutilsSetupError):
+            cmd.build_libraries(libs)
+
+        obj_deps = 'some_string'
+        libs = [('example', {'sources': ['source.c'], 'obj_deps': obj_deps})]
+        with pytest.raises(DistutilsSetupError):
+            cmd.build_libraries(libs)
+
+        obj_deps = {'': ''}
+        libs = [('example', {'sources': ['source.c'], 'obj_deps': obj_deps})]
+        with pytest.raises(DistutilsSetupError):
+            cmd.build_libraries(libs)
+
+        obj_deps = {'source.c': ''}
+        libs = [('example', {'sources': ['source.c'], 'obj_deps': obj_deps})]
+        with pytest.raises(DistutilsSetupError):
+            cmd.build_libraries(libs)
+
+        # with that out of the way, let's see if the crude dependency
+        # system works
+        cmd.compiler = mock.MagicMock(spec=cmd.compiler)
+        mock_newer.return_value = ([], [])
+
+        obj_deps = {'': ('global.h',), 'example.c': ('example.h',)}
+        libs = [('example', {'sources': ['example.c'], 'obj_deps': obj_deps})]
+
+        cmd.build_libraries(libs)
+        assert [['example.c', 'global.h', 'example.h']] in mock_newer.call_args[0]
+        assert not cmd.compiler.compile.called
+        assert cmd.compiler.create_static_lib.call_count == 1
+
+        # reset the call numbers so we can test again
+        cmd.compiler.reset_mock()
+
+        mock_newer.return_value = ''  # anything as long as it's not ([],[])
+        cmd.build_libraries(libs)
+        assert cmd.compiler.compile.call_count == 1
+        assert cmd.compiler.create_static_lib.call_count == 1
+
+    @mock.patch('setuptools.command.build_clib.newer_pairwise_group')
+    def test_build_libraries_reproducible(self, mock_newer):
+        dist = Distribution()
+        cmd = build_clib(dist)
+
+        # with that out of the way, let's see if the crude dependency
+        # system works
+        cmd.compiler = mock.MagicMock(spec=cmd.compiler)
+        mock_newer.return_value = ([], [])
+
+        original_sources = ['a-example.c', 'example.c']
+        sources = original_sources
+
+        obj_deps = {'': ('global.h',), 'example.c': ('example.h',)}
+        libs = [('example', {'sources': sources, 'obj_deps': obj_deps})]
+
+        cmd.build_libraries(libs)
+        computed_call_args = mock_newer.call_args[0]
+
+        while sources == original_sources:
+            sources = random.sample(original_sources, len(original_sources))
+        libs = [('example', {'sources': sources, 'obj_deps': obj_deps})]
+
+        cmd.build_libraries(libs)
+        assert computed_call_args == mock_newer.call_args[0]

rl/Lib/site-packages/setuptools/tests/test_build_ext.py

@@ -0,0 +1,291 @@
+import os
+import sys
+from importlib.util import cache_from_source as _compiled_file_name
+
+import pytest
+from jaraco import path
+
+from setuptools.command.build_ext import build_ext, get_abi3_suffix
+from setuptools.dist import Distribution
+from setuptools.errors import CompileError
+from setuptools.extension import Extension
+
+from . import environment
+from .textwrap import DALS
+
+import distutils.command.build_ext as orig
+from distutils.sysconfig import get_config_var
+
+IS_PYPY = '__pypy__' in sys.builtin_module_names
+
+
+class TestBuildExt:
+    def test_get_ext_filename(self):
+        """
+        Setuptools needs to give back the same
+        result as distutils, even if the fullname
+        is not in ext_map.
+        """
+        dist = Distribution()
+        cmd = build_ext(dist)
+        cmd.ext_map['foo/bar'] = ''
+        res = cmd.get_ext_filename('foo')
+        wanted = orig.build_ext.get_ext_filename(cmd, 'foo')
+        assert res == wanted
+
+    def test_abi3_filename(self):
+        """
+        Filename needs to be loadable by several versions
+        of Python 3 if 'is_abi3' is truthy on Extension()
+        """
+        print(get_abi3_suffix())
+
+        extension = Extension('spam.eggs', ['eggs.c'], py_limited_api=True)
+        dist = Distribution(dict(ext_modules=[extension]))
+        cmd = build_ext(dist)
+        cmd.finalize_options()
+        assert 'spam.eggs' in cmd.ext_map
+        res = cmd.get_ext_filename('spam.eggs')
+
+        if not get_abi3_suffix():
+            assert res.endswith(get_config_var('EXT_SUFFIX'))
+        elif sys.platform == 'win32':
+            assert res.endswith('eggs.pyd')
+        else:
+            assert 'abi3' in res
+
+    def test_ext_suffix_override(self):
+        """
+        SETUPTOOLS_EXT_SUFFIX variable always overrides
+        default extension options.
+        """
+        dist = Distribution()
+        cmd = build_ext(dist)
+        cmd.ext_map['for_abi3'] = ext = Extension(
+            'for_abi3',
+            ['s.c'],
+            # Override shouldn't affect abi3 modules
+            py_limited_api=True,
+        )
+        # Mock value needed to pass tests
+        ext._links_to_dynamic = False
+
+        if not IS_PYPY:
+            expect = cmd.get_ext_filename('for_abi3')
+        else:
+            # PyPy builds do not use ABI3 tag, so they will
+            # also get the overridden suffix.
+            expect = 'for_abi3.test-suffix'
+
+        try:
+            os.environ['SETUPTOOLS_EXT_SUFFIX'] = '.test-suffix'
+            res = cmd.get_ext_filename('normal')
+            assert 'normal.test-suffix' == res
+            res = cmd.get_ext_filename('for_abi3')
+            assert expect == res
+        finally:
+            del os.environ['SETUPTOOLS_EXT_SUFFIX']
+
+    def dist_with_example(self):
+        files = {
+            "src": {"mypkg": {"subpkg": {"ext2.c": ""}}},
+            "c-extensions": {"ext1": {"main.c": ""}},
+        }
+
+        ext1 = Extension("mypkg.ext1", ["c-extensions/ext1/main.c"])
+        ext2 = Extension("mypkg.subpkg.ext2", ["src/mypkg/subpkg/ext2.c"])
+        ext3 = Extension("ext3", ["c-extension/ext3.c"])
+
+        path.build(files)
+        return Distribution({
+            "script_name": "%test%",
+            "ext_modules": [ext1, ext2, ext3],
+            "package_dir": {"": "src"},
+        })
+
+    def test_get_outputs(self, tmpdir_cwd, monkeypatch):
+        monkeypatch.setenv('SETUPTOOLS_EXT_SUFFIX', '.mp3')  # make test OS-independent
+        monkeypatch.setattr('setuptools.command.build_ext.use_stubs', False)
+        dist = self.dist_with_example()
+
+        # Regular build: get_outputs not empty, but get_output_mappings is empty
+        build_ext = dist.get_command_obj("build_ext")
+        build_ext.editable_mode = False
+        build_ext.ensure_finalized()
+        build_lib = build_ext.build_lib.replace(os.sep, "/")
+        outputs = [x.replace(os.sep, "/") for x in build_ext.get_outputs()]
+        assert outputs == [
+            f"{build_lib}/ext3.mp3",
+            f"{build_lib}/mypkg/ext1.mp3",
+            f"{build_lib}/mypkg/subpkg/ext2.mp3",
+        ]
+        assert build_ext.get_output_mapping() == {}
+
+        # Editable build: get_output_mappings should contain everything in get_outputs
+        dist.reinitialize_command("build_ext")
+        build_ext.editable_mode = True
+        build_ext.ensure_finalized()
+        mapping = {
+            k.replace(os.sep, "/"): v.replace(os.sep, "/")
+            for k, v in build_ext.get_output_mapping().items()
+        }
+        assert mapping == {
+            f"{build_lib}/ext3.mp3": "src/ext3.mp3",
+            f"{build_lib}/mypkg/ext1.mp3": "src/mypkg/ext1.mp3",
+            f"{build_lib}/mypkg/subpkg/ext2.mp3": "src/mypkg/subpkg/ext2.mp3",
+        }
+
+    def test_get_output_mapping_with_stub(self, tmpdir_cwd, monkeypatch):
+        monkeypatch.setenv('SETUPTOOLS_EXT_SUFFIX', '.mp3')  # make test OS-independent
+        monkeypatch.setattr('setuptools.command.build_ext.use_stubs', True)
+        dist = self.dist_with_example()
+
+        # Editable build should create compiled stubs (.pyc files only, no .py)
+        build_ext = dist.get_command_obj("build_ext")
+        build_ext.editable_mode = True
+        build_ext.ensure_finalized()
+        for ext in build_ext.extensions:
+            monkeypatch.setattr(ext, "_needs_stub", True)
+
+        build_lib = build_ext.build_lib.replace(os.sep, "/")
+        mapping = {
+            k.replace(os.sep, "/"): v.replace(os.sep, "/")
+            for k, v in build_ext.get_output_mapping().items()
+        }
+
+        def C(file):
+            """Make it possible to do comparisons and tests in a OS-independent way"""
+            return _compiled_file_name(file).replace(os.sep, "/")
+
+        assert mapping == {
+            C(f"{build_lib}/ext3.py"): C("src/ext3.py"),
+            f"{build_lib}/ext3.mp3": "src/ext3.mp3",
+            C(f"{build_lib}/mypkg/ext1.py"): C("src/mypkg/ext1.py"),
+            f"{build_lib}/mypkg/ext1.mp3": "src/mypkg/ext1.mp3",
+            C(f"{build_lib}/mypkg/subpkg/ext2.py"): C("src/mypkg/subpkg/ext2.py"),
+            f"{build_lib}/mypkg/subpkg/ext2.mp3": "src/mypkg/subpkg/ext2.mp3",
+        }
+
+        # Ensure only the compiled stubs are present not the raw .py stub
+        assert f"{build_lib}/mypkg/ext1.py" not in mapping
+        assert f"{build_lib}/mypkg/subpkg/ext2.py" not in mapping
+
+        # Visualize what the cached stub files look like
+        example_stub = C(f"{build_lib}/mypkg/ext1.py")
+        assert example_stub in mapping
+        assert example_stub.startswith(f"{build_lib}/mypkg/__pycache__/ext1")
+        assert example_stub.endswith(".pyc")
+
+
+class TestBuildExtInplace:
+    def get_build_ext_cmd(self, optional: bool, **opts):
+        files = {
+            "eggs.c": "#include missingheader.h\n",
+            ".build": {"lib": {}, "tmp": {}},
+        }
+        path.build(files)  # jaraco/path#232
+        extension = Extension('spam.eggs', ['eggs.c'], optional=optional)
+        dist = Distribution(dict(ext_modules=[extension]))
+        dist.script_name = 'setup.py'
+        cmd = build_ext(dist)
+        vars(cmd).update(build_lib=".build/lib", build_temp=".build/tmp", **opts)
+        cmd.ensure_finalized()
+        return cmd
+
+    def get_log_messages(self, caplog, capsys):
+        """
+        Historically, distutils "logged" by printing to sys.std*.
+        Later versions adopted the logging framework. Grab
+        messages regardless of how they were captured.
+        """
+        std = capsys.readouterr()
+        return std.out.splitlines() + std.err.splitlines() + caplog.messages
+
+    def test_optional(self, tmpdir_cwd, caplog, capsys):
+        """
+        If optional extensions fail to build, setuptools should show the error
+        in the logs but not fail to build
+        """
+        cmd = self.get_build_ext_cmd(optional=True, inplace=True)
+        cmd.run()
+        assert any(
+            'build_ext: building extension "spam.eggs" failed'
+            for msg in self.get_log_messages(caplog, capsys)
+        )
+        # No compile error exception should be raised
+
+    def test_non_optional(self, tmpdir_cwd):
+        # Non-optional extensions should raise an exception
+        cmd = self.get_build_ext_cmd(optional=False, inplace=True)
+        with pytest.raises(CompileError):
+            cmd.run()
+
+
+def test_build_ext_config_handling(tmpdir_cwd):
+    files = {
+        'setup.py': DALS(
+            """
+            from setuptools import Extension, setup
+            setup(
+                name='foo',
+                version='0.0.0',
+                ext_modules=[Extension('foo', ['foo.c'])],
+            )
+            """
+        ),
+        'foo.c': DALS(
+            """
+            #include "Python.h"
+
+            #if PY_MAJOR_VERSION >= 3
+
+            static struct PyModuleDef moduledef = {
+                    PyModuleDef_HEAD_INIT,
+                    "foo",
+                    NULL,
+                    0,
+                    NULL,
+                    NULL,
+                    NULL,
+                    NULL,
+                    NULL
+            };
+
+            #define INITERROR return NULL
+
+            PyMODINIT_FUNC PyInit_foo(void)
+
+            #else
+
+            #define INITERROR return
+
+            void initfoo(void)
+
+            #endif
+            {
+            #if PY_MAJOR_VERSION >= 3
+                PyObject *module = PyModule_Create(&moduledef);
+            #else
+                PyObject *module = Py_InitModule("extension", NULL);
+            #endif
+                if (module == NULL)
+                    INITERROR;
+            #if PY_MAJOR_VERSION >= 3
+                return module;
+            #endif
+            }
+            """
+        ),
+        'setup.cfg': DALS(
+            """
+            [build]
+            build_base = foo_build
+            """
+        ),
+    }
+    path.build(files)
+    code, output = environment.run_setup_py(
+        cmd=['build'],
+        data_stream=(0, 2),
+    )
+    assert code == 0, '\nSTDOUT:\n%s\nSTDERR:\n%s' % output

rl/Lib/site-packages/setuptools/tests/test_build_meta.py

@@ -0,0 +1,970 @@
+import contextlib
+import importlib
+import os
+import re
+import shutil
+import signal
+import sys
+import tarfile
+from concurrent import futures
+from pathlib import Path
+from typing import Any, Callable
+from zipfile import ZipFile
+
+import pytest
+from jaraco import path
+from packaging.requirements import Requirement
+
+from .textwrap import DALS
+
+SETUP_SCRIPT_STUB = "__import__('setuptools').setup()"
+
+
+TIMEOUT = int(os.getenv("TIMEOUT_BACKEND_TEST", "180"))  # in seconds
+IS_PYPY = '__pypy__' in sys.builtin_module_names
+
+
+pytestmark = pytest.mark.skipif(
+    sys.platform == "win32" and IS_PYPY,
+    reason="The combination of PyPy + Windows + pytest-xdist + ProcessPoolExecutor "
+    "is flaky and problematic",
+)
+
+
+class BuildBackendBase:
+    def __init__(self, cwd='.', env=None, backend_name='setuptools.build_meta'):
+        self.cwd = cwd
+        self.env = env or {}
+        self.backend_name = backend_name
+
+
+class BuildBackend(BuildBackendBase):
+    """PEP 517 Build Backend"""
+
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+        self.pool = futures.ProcessPoolExecutor(max_workers=1)
+
+    def __getattr__(self, name: str) -> Callable[..., Any]:
+        """Handles arbitrary function invocations on the build backend."""
+
+        def method(*args, **kw):
+            root = os.path.abspath(self.cwd)
+            caller = BuildBackendCaller(root, self.env, self.backend_name)
+            pid = None
+            try:
+                pid = self.pool.submit(os.getpid).result(TIMEOUT)
+                return self.pool.submit(caller, name, *args, **kw).result(TIMEOUT)
+            except futures.TimeoutError:
+                self.pool.shutdown(wait=False)  # doesn't stop already running processes
+                self._kill(pid)
+                pytest.xfail(f"Backend did not respond before timeout ({TIMEOUT} s)")
+            except (futures.process.BrokenProcessPool, MemoryError, OSError):
+                if IS_PYPY:
+                    pytest.xfail("PyPy frequently fails tests with ProcessPoolExector")
+                raise
+
+        return method
+
+    def _kill(self, pid):
+        if pid is None:
+            return
+        with contextlib.suppress(ProcessLookupError, OSError):
+            os.kill(pid, signal.SIGTERM if os.name == "nt" else signal.SIGKILL)
+
+
+class BuildBackendCaller(BuildBackendBase):
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+
+        (self.backend_name, _, self.backend_obj) = self.backend_name.partition(':')
+
+    def __call__(self, name, *args, **kw):
+        """Handles arbitrary function invocations on the build backend."""
+        os.chdir(self.cwd)
+        os.environ.update(self.env)
+        mod = importlib.import_module(self.backend_name)
+
+        if self.backend_obj:
+            backend = getattr(mod, self.backend_obj)
+        else:
+            backend = mod
+
+        return getattr(backend, name)(*args, **kw)
+
+
+defns = [
+    {  # simple setup.py script
+        'setup.py': DALS(
+            """
+            __import__('setuptools').setup(
+                name='foo',
+                version='0.0.0',
+                py_modules=['hello'],
+                setup_requires=['six'],
+            )
+            """
+        ),
+        'hello.py': DALS(
+            """
+            def run():
+                print('hello')
+            """
+        ),
+    },
+    {  # setup.py that relies on __name__
+        'setup.py': DALS(
+            """
+            assert __name__ == '__main__'
+            __import__('setuptools').setup(
+                name='foo',
+                version='0.0.0',
+                py_modules=['hello'],
+                setup_requires=['six'],
+            )
+            """
+        ),
+        'hello.py': DALS(
+            """
+            def run():
+                print('hello')
+            """
+        ),
+    },
+    {  # setup.py script that runs arbitrary code
+        'setup.py': DALS(
+            """
+            variable = True
+            def function():
+                return variable
+            assert variable
+            __import__('setuptools').setup(
+                name='foo',
+                version='0.0.0',
+                py_modules=['hello'],
+                setup_requires=['six'],
+            )
+            """
+        ),
+        'hello.py': DALS(
+            """
+            def run():
+                print('hello')
+            """
+        ),
+    },
+    {  # setup.py script that constructs temp files to be included in the distribution
+        'setup.py': DALS(
+            """
+            # Some packages construct files on the fly, include them in the package,
+            # and immediately remove them after `setup()` (e.g. pybind11==2.9.1).
+            # Therefore, we cannot use `distutils.core.run_setup(..., stop_after=...)`
+            # to obtain a distribution object first, and then run the distutils
+            # commands later, because these files will be removed in the meantime.
+
+            with open('world.py', 'w', encoding="utf-8") as f:
+                f.write('x = 42')
+
+            try:
+                __import__('setuptools').setup(
+                    name='foo',
+                    version='0.0.0',
+                    py_modules=['world'],
+                    setup_requires=['six'],
+                )
+            finally:
+                # Some packages will clean temporary files
+                __import__('os').unlink('world.py')
+            """
+        ),
+    },
+    {  # setup.cfg only
+        'setup.cfg': DALS(
+            """
+        [metadata]
+        name = foo
+        version = 0.0.0
+
+        [options]
+        py_modules=hello
+        setup_requires=six
+        """
+        ),
+        'hello.py': DALS(
+            """
+        def run():
+            print('hello')
+        """
+        ),
+    },
+    {  # setup.cfg and setup.py
+        'setup.cfg': DALS(
+            """
+        [metadata]
+        name = foo
+        version = 0.0.0
+
+        [options]
+        py_modules=hello
+        setup_requires=six
+        """
+        ),
+        'setup.py': "__import__('setuptools').setup()",
+        'hello.py': DALS(
+            """
+        def run():
+            print('hello')
+        """
+        ),
+    },
+]
+
+
+class TestBuildMetaBackend:
+    backend_name = 'setuptools.build_meta'
+
+    def get_build_backend(self):
+        return BuildBackend(backend_name=self.backend_name)
+
+    @pytest.fixture(params=defns)
+    def build_backend(self, tmpdir, request):
+        path.build(request.param, prefix=str(tmpdir))
+        with tmpdir.as_cwd():
+            yield self.get_build_backend()
+
+    def test_get_requires_for_build_wheel(self, build_backend):
+        actual = build_backend.get_requires_for_build_wheel()
+        expected = ['six']
+        assert sorted(actual) == sorted(expected)
+
+    def test_get_requires_for_build_sdist(self, build_backend):
+        actual = build_backend.get_requires_for_build_sdist()
+        expected = ['six']
+        assert sorted(actual) == sorted(expected)
+
+    def test_build_wheel(self, build_backend):
+        dist_dir = os.path.abspath('pip-wheel')
+        os.makedirs(dist_dir)
+        wheel_name = build_backend.build_wheel(dist_dir)
+
+        wheel_file = os.path.join(dist_dir, wheel_name)
+        assert os.path.isfile(wheel_file)
+
+        # Temporary files should be removed
+        assert not os.path.isfile('world.py')
+
+        with ZipFile(wheel_file) as zipfile:
+            wheel_contents = set(zipfile.namelist())
+
+        # Each one of the examples have a single module
+        # that should be included in the distribution
+        python_scripts = (f for f in wheel_contents if f.endswith('.py'))
+        modules = [f for f in python_scripts if not f.endswith('setup.py')]
+        assert len(modules) == 1
+
+    @pytest.mark.parametrize('build_type', ('wheel', 'sdist'))
+    def test_build_with_existing_file_present(self, build_type, tmpdir_cwd):
+        # Building a sdist/wheel should still succeed if there's
+        # already a sdist/wheel in the destination directory.
+        files = {
+            'setup.py': "from setuptools import setup\nsetup()",
+            'VERSION': "0.0.1",
+            'setup.cfg': DALS(
+                """
+                [metadata]
+                name = foo
+                version = file: VERSION
+                """
+            ),
+            'pyproject.toml': DALS(
+                """
+                [build-system]
+                requires = ["setuptools", "wheel"]
+                build-backend = "setuptools.build_meta"
+                """
+            ),
+        }
+
+        path.build(files)
+
+        dist_dir = os.path.abspath('preexisting-' + build_type)
+
+        build_backend = self.get_build_backend()
+        build_method = getattr(build_backend, 'build_' + build_type)
+
+        # Build a first sdist/wheel.
+        # Note: this also check the destination directory is
+        # successfully created if it does not exist already.
+        first_result = build_method(dist_dir)
+
+        # Change version.
+        with open("VERSION", "wt", encoding="utf-8") as version_file:
+            version_file.write("0.0.2")
+
+        # Build a *second* sdist/wheel.
+        second_result = build_method(dist_dir)
+
+        assert os.path.isfile(os.path.join(dist_dir, first_result))
+        assert first_result != second_result
+
+        # And if rebuilding the exact same sdist/wheel?
+        open(os.path.join(dist_dir, second_result), 'wb').close()
+        third_result = build_method(dist_dir)
+        assert third_result == second_result
+        assert os.path.getsize(os.path.join(dist_dir, third_result)) > 0
+
+    @pytest.mark.parametrize("setup_script", [None, SETUP_SCRIPT_STUB])
+    def test_build_with_pyproject_config(self, tmpdir, setup_script):
+        files = {
+            'pyproject.toml': DALS(
+                """
+                [build-system]
+                requires = ["setuptools", "wheel"]
+                build-backend = "setuptools.build_meta"
+
+                [project]
+                name = "foo"
+                license = {text = "MIT"}
+                description = "This is a Python package"
+                dynamic = ["version", "readme"]
+                classifiers = [
+                    "Development Status :: 5 - Production/Stable",
+                    "Intended Audience :: Developers"
+                ]
+                urls = {Homepage = "http://github.com"}
+                dependencies = [
+                    "appdirs",
+                ]
+
+                [project.optional-dependencies]
+                all = [
+                    "tomli>=1",
+                    "pyscaffold>=4,<5",
+                    'importlib; python_version == "2.6"',
+                ]
+
+                [project.scripts]
+                foo = "foo.cli:main"
+
+                [tool.setuptools]
+                zip-safe = false
+                package-dir = {"" = "src"}
+                packages = {find = {where = ["src"]}}
+                license-files = ["LICENSE*"]
+
+                [tool.setuptools.dynamic]
+                version = {attr = "foo.__version__"}
+                readme = {file = "README.rst"}
+
+                [tool.distutils.sdist]
+                formats = "gztar"
+                """
+            ),
+            "MANIFEST.in": DALS(
+                """
+                global-include *.py *.txt
+                global-exclude *.py[cod]
+                """
+            ),
+            "README.rst": "This is a ``README``",
+            "LICENSE.txt": "---- placeholder MIT license ----",
+            "src": {
+                "foo": {
+                    "__init__.py": "__version__ = '0.1'",
+                    "__init__.pyi": "__version__: str",
+                    "cli.py": "def main(): print('hello world')",
+                    "data.txt": "def main(): print('hello world')",
+                    "py.typed": "",
+                }
+            },
+        }
+        if setup_script:
+            files["setup.py"] = setup_script
+
+        build_backend = self.get_build_backend()
+        with tmpdir.as_cwd():
+            path.build(files)
+            sdist_path = build_backend.build_sdist("temp")
+            wheel_file = build_backend.build_wheel("temp")
+
+        with tarfile.open(os.path.join(tmpdir, "temp", sdist_path)) as tar:
+            sdist_contents = set(tar.getnames())
+
+        with ZipFile(os.path.join(tmpdir, "temp", wheel_file)) as zipfile:
+            wheel_contents = set(zipfile.namelist())
+            metadata = str(zipfile.read("foo-0.1.dist-info/METADATA"), "utf-8")
+            license = str(zipfile.read("foo-0.1.dist-info/LICENSE.txt"), "utf-8")
+            epoints = str(zipfile.read("foo-0.1.dist-info/entry_points.txt"), "utf-8")
+
+        assert sdist_contents - {"foo-0.1/setup.py"} == {
+            'foo-0.1',
+            'foo-0.1/LICENSE.txt',
+            'foo-0.1/MANIFEST.in',
+            'foo-0.1/PKG-INFO',
+            'foo-0.1/README.rst',
+            'foo-0.1/pyproject.toml',
+            'foo-0.1/setup.cfg',
+            'foo-0.1/src',
+            'foo-0.1/src/foo',
+            'foo-0.1/src/foo/__init__.py',
+            'foo-0.1/src/foo/__init__.pyi',
+            'foo-0.1/src/foo/cli.py',
+            'foo-0.1/src/foo/data.txt',
+            'foo-0.1/src/foo/py.typed',
+            'foo-0.1/src/foo.egg-info',
+            'foo-0.1/src/foo.egg-info/PKG-INFO',
+            'foo-0.1/src/foo.egg-info/SOURCES.txt',
+            'foo-0.1/src/foo.egg-info/dependency_links.txt',
+            'foo-0.1/src/foo.egg-info/entry_points.txt',
+            'foo-0.1/src/foo.egg-info/requires.txt',
+            'foo-0.1/src/foo.egg-info/top_level.txt',
+            'foo-0.1/src/foo.egg-info/not-zip-safe',
+        }
+        assert wheel_contents == {
+            "foo/__init__.py",
+            "foo/__init__.pyi",  # include type information by default
+            "foo/cli.py",
+            "foo/data.txt",  # include_package_data defaults to True
+            "foo/py.typed",  # include type information by default
+            "foo-0.1.dist-info/LICENSE.txt",
+            "foo-0.1.dist-info/METADATA",
+            "foo-0.1.dist-info/WHEEL",
+            "foo-0.1.dist-info/entry_points.txt",
+            "foo-0.1.dist-info/top_level.txt",
+            "foo-0.1.dist-info/RECORD",
+        }
+        assert license == "---- placeholder MIT license ----"
+
+        for line in (
+            "Summary: This is a Python package",
+            "License: MIT",
+            "Classifier: Intended Audience :: Developers",
+            "Requires-Dist: appdirs",
+            "Requires-Dist: " + str(Requirement('tomli>=1 ; extra == "all"')),
+            "Requires-Dist: "
+            + str(Requirement('importlib; python_version=="2.6" and extra =="all"')),
+        ):
+            assert line in metadata, (line, metadata)
+
+        assert metadata.strip().endswith("This is a ``README``")
+        assert epoints.strip() == "[console_scripts]\nfoo = foo.cli:main"
+
+    def test_static_metadata_in_pyproject_config(self, tmpdir):
+        # Make sure static metadata in pyproject.toml is not overwritten by setup.py
+        # as required by PEP 621
+        files = {
+            'pyproject.toml': DALS(
+                """
+                [build-system]
+                requires = ["setuptools", "wheel"]
+                build-backend = "setuptools.build_meta"
+
+                [project]
+                name = "foo"
+                description = "This is a Python package"
+                version = "42"
+                dependencies = ["six"]
+                """
+            ),
+            'hello.py': DALS(
+                """
+                def run():
+                    print('hello')
+                """
+            ),
+            'setup.py': DALS(
+                """
+                __import__('setuptools').setup(
+                    name='bar',
+                    version='13',
+                )
+                """
+            ),
+        }
+        build_backend = self.get_build_backend()
+        with tmpdir.as_cwd():
+            path.build(files)
+            sdist_path = build_backend.build_sdist("temp")
+            wheel_file = build_backend.build_wheel("temp")
+
+        assert (tmpdir / "temp/foo-42.tar.gz").exists()
+        assert (tmpdir / "temp/foo-42-py3-none-any.whl").exists()
+        assert not (tmpdir / "temp/bar-13.tar.gz").exists()
+        assert not (tmpdir / "temp/bar-42.tar.gz").exists()
+        assert not (tmpdir / "temp/foo-13.tar.gz").exists()
+        assert not (tmpdir / "temp/bar-13-py3-none-any.whl").exists()
+        assert not (tmpdir / "temp/bar-42-py3-none-any.whl").exists()
+        assert not (tmpdir / "temp/foo-13-py3-none-any.whl").exists()
+
+        with tarfile.open(os.path.join(tmpdir, "temp", sdist_path)) as tar:
+            pkg_info = str(tar.extractfile('foo-42/PKG-INFO').read(), "utf-8")
+            members = tar.getnames()
+            assert "bar-13/PKG-INFO" not in members
+
+        with ZipFile(os.path.join(tmpdir, "temp", wheel_file)) as zipfile:
+            metadata = str(zipfile.read("foo-42.dist-info/METADATA"), "utf-8")
+            members = zipfile.namelist()
+            assert "bar-13.dist-info/METADATA" not in members
+
+        for file in pkg_info, metadata:
+            for line in ("Name: foo", "Version: 42"):
+                assert line in file
+            for line in ("Name: bar", "Version: 13"):
+                assert line not in file
+
+    def test_build_sdist(self, build_backend):
+        dist_dir = os.path.abspath('pip-sdist')
+        os.makedirs(dist_dir)
+        sdist_name = build_backend.build_sdist(dist_dir)
+
+        assert os.path.isfile(os.path.join(dist_dir, sdist_name))
+
+    def test_prepare_metadata_for_build_wheel(self, build_backend):
+        dist_dir = os.path.abspath('pip-dist-info')
+        os.makedirs(dist_dir)
+
+        dist_info = build_backend.prepare_metadata_for_build_wheel(dist_dir)
+
+        assert os.path.isfile(os.path.join(dist_dir, dist_info, 'METADATA'))
+
+    def test_prepare_metadata_inplace(self, build_backend):
+        """
+        Some users might pass metadata_directory pre-populated with `.tox` or `.venv`.
+        See issue #3523.
+        """
+        for pre_existing in [
+            ".tox/python/lib/python3.10/site-packages/attrs-22.1.0.dist-info",
+            ".tox/python/lib/python3.10/site-packages/autocommand-2.2.1.dist-info",
+            ".nox/python/lib/python3.10/site-packages/build-0.8.0.dist-info",
+            ".venv/python3.10/site-packages/click-8.1.3.dist-info",
+            "venv/python3.10/site-packages/distlib-0.3.5.dist-info",
+            "env/python3.10/site-packages/docutils-0.19.dist-info",
+        ]:
+            os.makedirs(pre_existing, exist_ok=True)
+        dist_info = build_backend.prepare_metadata_for_build_wheel(".")
+        assert os.path.isfile(os.path.join(dist_info, 'METADATA'))
+
+    def test_build_sdist_explicit_dist(self, build_backend):
+        # explicitly specifying the dist folder should work
+        # the folder sdist_directory and the ``--dist-dir`` can be the same
+        dist_dir = os.path.abspath('dist')
+        sdist_name = build_backend.build_sdist(dist_dir)
+        assert os.path.isfile(os.path.join(dist_dir, sdist_name))
+
+    def test_build_sdist_version_change(self, build_backend):
+        sdist_into_directory = os.path.abspath("out_sdist")
+        os.makedirs(sdist_into_directory)
+
+        sdist_name = build_backend.build_sdist(sdist_into_directory)
+        assert os.path.isfile(os.path.join(sdist_into_directory, sdist_name))
+
+        # if the setup.py changes subsequent call of the build meta
+        # should still succeed, given the
+        # sdist_directory the frontend specifies is empty
+        setup_loc = os.path.abspath("setup.py")
+        if not os.path.exists(setup_loc):
+            setup_loc = os.path.abspath("setup.cfg")
+
+        with open(setup_loc, 'rt', encoding="utf-8") as file_handler:
+            content = file_handler.read()
+        with open(setup_loc, 'wt', encoding="utf-8") as file_handler:
+            file_handler.write(content.replace("version='0.0.0'", "version='0.0.1'"))
+
+        shutil.rmtree(sdist_into_directory)
+        os.makedirs(sdist_into_directory)
+
+        sdist_name = build_backend.build_sdist("out_sdist")
+        assert os.path.isfile(os.path.join(os.path.abspath("out_sdist"), sdist_name))
+
+    def test_build_sdist_pyproject_toml_exists(self, tmpdir_cwd):
+        files = {
+            'setup.py': DALS(
+                """
+                __import__('setuptools').setup(
+                    name='foo',
+                    version='0.0.0',
+                    py_modules=['hello']
+                )"""
+            ),
+            'hello.py': '',
+            'pyproject.toml': DALS(
+                """
+                [build-system]
+                requires = ["setuptools", "wheel"]
+                build-backend = "setuptools.build_meta"
+                """
+            ),
+        }
+        path.build(files)
+        build_backend = self.get_build_backend()
+        targz_path = build_backend.build_sdist("temp")
+        with tarfile.open(os.path.join("temp", targz_path)) as tar:
+            assert any('pyproject.toml' in name for name in tar.getnames())
+
+    def test_build_sdist_setup_py_exists(self, tmpdir_cwd):
+        # If build_sdist is called from a script other than setup.py,
+        # ensure setup.py is included
+        path.build(defns[0])
+
+        build_backend = self.get_build_backend()
+        targz_path = build_backend.build_sdist("temp")
+        with tarfile.open(os.path.join("temp", targz_path)) as tar:
+            assert any('setup.py' in name for name in tar.getnames())
+
+    def test_build_sdist_setup_py_manifest_excluded(self, tmpdir_cwd):
+        # Ensure that MANIFEST.in can exclude setup.py
+        files = {
+            'setup.py': DALS(
+                """
+        __import__('setuptools').setup(
+            name='foo',
+            version='0.0.0',
+            py_modules=['hello']
+        )"""
+            ),
+            'hello.py': '',
+            'MANIFEST.in': DALS(
+                """
+        exclude setup.py
+        """
+            ),
+        }
+
+        path.build(files)
+
+        build_backend = self.get_build_backend()
+        targz_path = build_backend.build_sdist("temp")
+        with tarfile.open(os.path.join("temp", targz_path)) as tar:
+            assert not any('setup.py' in name for name in tar.getnames())
+
+    def test_build_sdist_builds_targz_even_if_zip_indicated(self, tmpdir_cwd):
+        files = {
+            'setup.py': DALS(
+                """
+                __import__('setuptools').setup(
+                    name='foo',
+                    version='0.0.0',
+                    py_modules=['hello']
+                )"""
+            ),
+            'hello.py': '',
+            'setup.cfg': DALS(
+                """
+                [sdist]
+                formats=zip
+                """
+            ),
+        }
+
+        path.build(files)
+
+        build_backend = self.get_build_backend()
+        build_backend.build_sdist("temp")
+
+    _relative_path_import_files = {
+        'setup.py': DALS(
+            """
+            __import__('setuptools').setup(
+                name='foo',
+                version=__import__('hello').__version__,
+                py_modules=['hello']
+            )"""
+        ),
+        'hello.py': '__version__ = "0.0.0"',
+        'setup.cfg': DALS(
+            """
+            [sdist]
+            formats=zip
+            """
+        ),
+    }
+
+    def test_build_sdist_relative_path_import(self, tmpdir_cwd):
+        path.build(self._relative_path_import_files)
+        build_backend = self.get_build_backend()
+        with pytest.raises(ImportError, match="^No module named 'hello'$"):
+            build_backend.build_sdist("temp")
+
+    _simple_pyproject_example = {
+        "pyproject.toml": DALS(
+            """
+            [project]
+            name = "proj"
+            version = "42"
+            """
+        ),
+        "src": {"proj": {"__init__.py": ""}},
+    }
+
+    def _assert_link_tree(self, parent_dir):
+        """All files in the directory should be either links or hard links"""
+        files = list(Path(parent_dir).glob("**/*"))
+        assert files  # Should not be empty
+        for file in files:
+            assert file.is_symlink() or os.stat(file).st_nlink > 0
+
+    def test_editable_without_config_settings(self, tmpdir_cwd):
+        """
+        Sanity check to ensure tests with --mode=strict are different from the ones
+        without --mode.
+
+        --mode=strict should create a local directory with a package tree.
+        The directory should not get created otherwise.
+        """
+        path.build(self._simple_pyproject_example)
+        build_backend = self.get_build_backend()
+        assert not Path("build").exists()
+        build_backend.build_editable("temp")
+        assert not Path("build").exists()
+
+    def test_build_wheel_inplace(self, tmpdir_cwd):
+        config_settings = {"--build-option": ["build_ext", "--inplace"]}
+        path.build(self._simple_pyproject_example)
+        build_backend = self.get_build_backend()
+        assert not Path("build").exists()
+        Path("build").mkdir()
+        build_backend.prepare_metadata_for_build_wheel("build", config_settings)
+        build_backend.build_wheel("build", config_settings)
+        assert Path("build/proj-42-py3-none-any.whl").exists()
+
+    @pytest.mark.parametrize("config_settings", [{"editable-mode": "strict"}])
+    def test_editable_with_config_settings(self, tmpdir_cwd, config_settings):
+        path.build({**self._simple_pyproject_example, '_meta': {}})
+        assert not Path("build").exists()
+        build_backend = self.get_build_backend()
+        build_backend.prepare_metadata_for_build_editable("_meta", config_settings)
+        build_backend.build_editable("temp", config_settings, "_meta")
+        self._assert_link_tree(next(Path("build").glob("__editable__.*")))
+
+    @pytest.mark.parametrize(
+        'setup_literal, requirements',
+        [
+            ("'foo'", ['foo']),
+            ("['foo']", ['foo']),
+            (r"'foo\n'", ['foo']),
+            (r"'foo\n\n'", ['foo']),
+            ("['foo', 'bar']", ['foo', 'bar']),
+            (r"'# Has a comment line\nfoo'", ['foo']),
+            (r"'foo # Has an inline comment'", ['foo']),
+            (r"'foo \\\n >=3.0'", ['foo>=3.0']),
+            (r"'foo\nbar'", ['foo', 'bar']),
+            (r"'foo\nbar\n'", ['foo', 'bar']),
+            (r"['foo\n', 'bar\n']", ['foo', 'bar']),
+        ],
+    )
+    @pytest.mark.parametrize('use_wheel', [True, False])
+    def test_setup_requires(self, setup_literal, requirements, use_wheel, tmpdir_cwd):
+        files = {
+            'setup.py': DALS(
+                """
+                from setuptools import setup
+
+                setup(
+                    name="qux",
+                    version="0.0.0",
+                    py_modules=["hello"],
+                    setup_requires={setup_literal},
+                )
+            """
+            ).format(setup_literal=setup_literal),
+            'hello.py': DALS(
+                """
+            def run():
+                print('hello')
+            """
+            ),
+        }
+
+        path.build(files)
+
+        build_backend = self.get_build_backend()
+
+        if use_wheel:
+            get_requires = build_backend.get_requires_for_build_wheel
+        else:
+            get_requires = build_backend.get_requires_for_build_sdist
+
+        # Ensure that the build requirements are properly parsed
+        expected = sorted(requirements)
+        actual = get_requires()
+
+        assert expected == sorted(actual)
+
+    def test_setup_requires_with_auto_discovery(self, tmpdir_cwd):
+        # Make sure patches introduced to retrieve setup_requires don't accidentally
+        # activate auto-discovery and cause problems due to the incomplete set of
+        # attributes passed to MinimalDistribution
+        files = {
+            'pyproject.toml': DALS(
+                """
+                [project]
+                name = "proj"
+                version = "42"
+            """
+            ),
+            "setup.py": DALS(
+                """
+                __import__('setuptools').setup(
+                    setup_requires=["foo"],
+                    py_modules = ["hello", "world"]
+                )
+            """
+            ),
+            'hello.py': "'hello'",
+            'world.py': "'world'",
+        }
+        path.build(files)
+        build_backend = self.get_build_backend()
+        setup_requires = build_backend.get_requires_for_build_wheel()
+        assert setup_requires == ["foo"]
+
+    def test_dont_install_setup_requires(self, tmpdir_cwd):
+        files = {
+            'setup.py': DALS(
+                """
+                        from setuptools import setup
+
+                        setup(
+                            name="qux",
+                            version="0.0.0",
+                            py_modules=["hello"],
+                            setup_requires=["does-not-exist >99"],
+                        )
+                    """
+            ),
+            'hello.py': DALS(
+                """
+                    def run():
+                        print('hello')
+                    """
+            ),
+        }
+
+        path.build(files)
+
+        build_backend = self.get_build_backend()
+
+        dist_dir = os.path.abspath('pip-dist-info')
+        os.makedirs(dist_dir)
+
+        # does-not-exist can't be satisfied, so if it attempts to install
+        # setup_requires, it will fail.
+        build_backend.prepare_metadata_for_build_wheel(dist_dir)
+
+    _sys_argv_0_passthrough = {
+        'setup.py': DALS(
+            """
+            import os
+            import sys
+
+            __import__('setuptools').setup(
+                name='foo',
+                version='0.0.0',
+            )
+
+            sys_argv = os.path.abspath(sys.argv[0])
+            file_path = os.path.abspath('setup.py')
+            assert sys_argv == file_path
+            """
+        )
+    }
+
+    def test_sys_argv_passthrough(self, tmpdir_cwd):
+        path.build(self._sys_argv_0_passthrough)
+        build_backend = self.get_build_backend()
+        with pytest.raises(AssertionError):
+            build_backend.build_sdist("temp")
+
+    _setup_py_file_abspath = {
+        'setup.py': DALS(
+            """
+            import os
+            assert os.path.isabs(__file__)
+            __import__('setuptools').setup(
+                name='foo',
+                version='0.0.0',
+                py_modules=['hello'],
+                setup_requires=['six'],
+            )
+            """
+        )
+    }
+
+    def test_setup_py_file_abspath(self, tmpdir_cwd):
+        path.build(self._setup_py_file_abspath)
+        build_backend = self.get_build_backend()
+        build_backend.build_sdist("temp")
+
+    @pytest.mark.parametrize('build_hook', ('build_sdist', 'build_wheel'))
+    def test_build_with_empty_setuppy(self, build_backend, build_hook):
+        files = {'setup.py': ''}
+        path.build(files)
+
+        msg = re.escape('No distribution was found.')
+        with pytest.raises(ValueError, match=msg):
+            getattr(build_backend, build_hook)("temp")
+
+
+class TestBuildMetaLegacyBackend(TestBuildMetaBackend):
+    backend_name = 'setuptools.build_meta:__legacy__'
+
+    # build_meta_legacy-specific tests
+    def test_build_sdist_relative_path_import(self, tmpdir_cwd):
+        # This must fail in build_meta, but must pass in build_meta_legacy
+        path.build(self._relative_path_import_files)
+
+        build_backend = self.get_build_backend()
+        build_backend.build_sdist("temp")
+
+    def test_sys_argv_passthrough(self, tmpdir_cwd):
+        path.build(self._sys_argv_0_passthrough)
+
+        build_backend = self.get_build_backend()
+        build_backend.build_sdist("temp")
+
+
+def test_legacy_editable_install(venv, tmpdir, tmpdir_cwd):
+    pyproject = """
+    [build-system]
+    requires = ["setuptools"]
+    build-backend = "setuptools.build_meta"
+    [project]
+    name = "myproj"
+    version = "42"
+    """
+    path.build({"pyproject.toml": DALS(pyproject), "mymod.py": ""})
+
+    # First: sanity check
+    cmd = ["pip", "install", "--no-build-isolation", "-e", "."]
+    output = venv.run(cmd, cwd=tmpdir).lower()
+    assert "running setup.py develop for myproj" not in output
+    assert "created wheel for myproj" in output
+
+    # Then: real test
+    env = {**os.environ, "SETUPTOOLS_ENABLE_FEATURES": "legacy-editable"}
+    cmd = ["pip", "install", "--no-build-isolation", "-e", "."]
+    output = venv.run(cmd, cwd=tmpdir, env=env).lower()
+    assert "running setup.py develop for myproj" in output
+
+
+@pytest.mark.filterwarnings("ignore::setuptools.SetuptoolsDeprecationWarning")
+def test_sys_exit_0_in_setuppy(monkeypatch, tmp_path):
+    """Setuptools should be resilient to setup.py with ``sys.exit(0)`` (#3973)."""
+    monkeypatch.chdir(tmp_path)
+    setuppy = """
+        import sys, setuptools
+        setuptools.setup(name='foo', version='0.0.0')
+        sys.exit(0)
+        """
+    (tmp_path / "setup.py").write_text(DALS(setuppy), encoding="utf-8")
+    backend = BuildBackend(backend_name="setuptools.build_meta")
+    assert backend.get_requires_for_build_wheel() == []
+
+
+def test_system_exit_in_setuppy(monkeypatch, tmp_path):
+    monkeypatch.chdir(tmp_path)
+    setuppy = "import sys; sys.exit('some error')"
+    (tmp_path / "setup.py").write_text(setuppy, encoding="utf-8")
+    with pytest.raises(SystemExit, match="some error"):
+        backend = BuildBackend(backend_name="setuptools.build_meta")
+        backend.get_requires_for_build_wheel()

rl/Lib/site-packages/setuptools/tests/test_build_py.py

@@ -0,0 +1,480 @@
+import os
+import shutil
+import stat
+import warnings
+from pathlib import Path
+from unittest.mock import Mock
+
+import jaraco.path
+import pytest
+
+from setuptools import SetuptoolsDeprecationWarning
+from setuptools.dist import Distribution
+
+from .textwrap import DALS
+
+
+def test_directories_in_package_data_glob(tmpdir_cwd):
+    """
+    Directories matching the glob in package_data should
+    not be included in the package data.
+
+    Regression test for #261.
+    """
+    dist = Distribution(
+        dict(
+            script_name='setup.py',
+            script_args=['build_py'],
+            packages=[''],
+            package_data={'': ['path/*']},
+        )
+    )
+    os.makedirs('path/subpath')
+    dist.parse_command_line()
+    dist.run_commands()
+
+
+def test_recursive_in_package_data_glob(tmpdir_cwd):
+    """
+    Files matching recursive globs (**) in package_data should
+    be included in the package data.
+
+    #1806
+    """
+    dist = Distribution(
+        dict(
+            script_name='setup.py',
+            script_args=['build_py'],
+            packages=[''],
+            package_data={'': ['path/**/data']},
+        )
+    )
+    os.makedirs('path/subpath/subsubpath')
+    open('path/subpath/subsubpath/data', 'wb').close()
+
+    dist.parse_command_line()
+    dist.run_commands()
+
+    assert stat.S_ISREG(os.stat('build/lib/path/subpath/subsubpath/data').st_mode), (
+        "File is not included"
+    )
+
+
+def test_read_only(tmpdir_cwd):
+    """
+    Ensure read-only flag is not preserved in copy
+    for package modules and package data, as that
+    causes problems with deleting read-only files on
+    Windows.
+
+    #1451
+    """
+    dist = Distribution(
+        dict(
+            script_name='setup.py',
+            script_args=['build_py'],
+            packages=['pkg'],
+            package_data={'pkg': ['data.dat']},
+        )
+    )
+    os.makedirs('pkg')
+    open('pkg/__init__.py', 'wb').close()
+    open('pkg/data.dat', 'wb').close()
+    os.chmod('pkg/__init__.py', stat.S_IREAD)
+    os.chmod('pkg/data.dat', stat.S_IREAD)
+    dist.parse_command_line()
+    dist.run_commands()
+    shutil.rmtree('build')
+
+
+@pytest.mark.xfail(
+    'platform.system() == "Windows"',
+    reason="On Windows, files do not have executable bits",
+    raises=AssertionError,
+    strict=True,
+)
+def test_executable_data(tmpdir_cwd):
+    """
+    Ensure executable bit is preserved in copy for
+    package data, as users rely on it for scripts.
+
+    #2041
+    """
+    dist = Distribution(
+        dict(
+            script_name='setup.py',
+            script_args=['build_py'],
+            packages=['pkg'],
+            package_data={'pkg': ['run-me']},
+        )
+    )
+    os.makedirs('pkg')
+    open('pkg/__init__.py', 'wb').close()
+    open('pkg/run-me', 'wb').close()
+    os.chmod('pkg/run-me', 0o700)
+
+    dist.parse_command_line()
+    dist.run_commands()
+
+    assert os.stat('build/lib/pkg/run-me').st_mode & stat.S_IEXEC, (
+        "Script is not executable"
+    )
+
+
+EXAMPLE_WITH_MANIFEST = {
+    "setup.cfg": DALS(
+        """
+        [metadata]
+        name = mypkg
+        version = 42
+
+        [options]
+        include_package_data = True
+        packages = find:
+
+        [options.packages.find]
+        exclude = *.tests*
+        """
+    ),
+    "mypkg": {
+        "__init__.py": "",
+        "resource_file.txt": "",
+        "tests": {
+            "__init__.py": "",
+            "test_mypkg.py": "",
+            "test_file.txt": "",
+        },
+    },
+    "MANIFEST.in": DALS(
+        """
+        global-include *.py *.txt
+        global-exclude *.py[cod]
+        prune dist
+        prune build
+        prune *.egg-info
+        """
+    ),
+}
+
+
+def test_excluded_subpackages(tmpdir_cwd):
+    jaraco.path.build(EXAMPLE_WITH_MANIFEST)
+    dist = Distribution({"script_name": "%PEP 517%"})
+    dist.parse_config_files()
+
+    build_py = dist.get_command_obj("build_py")
+
+    msg = r"Python recognizes 'mypkg\.tests' as an importable package"
+    with pytest.warns(SetuptoolsDeprecationWarning, match=msg):
+        # TODO: To fix #3260 we need some transition period to deprecate the
+        # existing behavior of `include_package_data`. After the transition, we
+        # should remove the warning and fix the behaviour.
+
+        if os.getenv("SETUPTOOLS_USE_DISTUTILS") == "stdlib":
+            # pytest.warns reset the warning filter temporarily
+            # https://github.com/pytest-dev/pytest/issues/4011#issuecomment-423494810
+            warnings.filterwarnings(
+                "ignore",
+                "'encoding' argument not specified",
+                module="distutils.text_file",
+                # This warning is already fixed in pypa/distutils but not in stdlib
+            )
+
+        build_py.finalize_options()
+        build_py.run()
+
+    build_dir = Path(dist.get_command_obj("build_py").build_lib)
+    assert (build_dir / "mypkg/__init__.py").exists()
+    assert (build_dir / "mypkg/resource_file.txt").exists()
+
+    # Setuptools is configured to ignore `mypkg.tests`, therefore the following
+    # files/dirs should not be included in the distribution.
+    for f in [
+        "mypkg/tests/__init__.py",
+        "mypkg/tests/test_mypkg.py",
+        "mypkg/tests/test_file.txt",
+        "mypkg/tests",
+    ]:
+        with pytest.raises(AssertionError):
+            # TODO: Enforce the following assertion once #3260 is fixed
+            # (remove context manager and the following xfail).
+            assert not (build_dir / f).exists()
+
+    pytest.xfail("#3260")
+
+
+@pytest.mark.filterwarnings("ignore::setuptools.SetuptoolsDeprecationWarning")
+def test_existing_egg_info(tmpdir_cwd, monkeypatch):
+    """When provided with the ``existing_egg_info_dir`` attribute, build_py should not
+    attempt to run egg_info again.
+    """
+    # == Pre-condition ==
+    # Generate an egg-info dir
+    jaraco.path.build(EXAMPLE_WITH_MANIFEST)
+    dist = Distribution({"script_name": "%PEP 517%"})
+    dist.parse_config_files()
+    assert dist.include_package_data
+
+    egg_info = dist.get_command_obj("egg_info")
+    dist.run_command("egg_info")
+    egg_info_dir = next(Path(egg_info.egg_base).glob("*.egg-info"))
+    assert egg_info_dir.is_dir()
+
+    # == Setup ==
+    build_py = dist.get_command_obj("build_py")
+    build_py.finalize_options()
+    egg_info = dist.get_command_obj("egg_info")
+    egg_info_run = Mock(side_effect=egg_info.run)
+    monkeypatch.setattr(egg_info, "run", egg_info_run)
+
+    # == Remove caches ==
+    # egg_info is called when build_py looks for data_files, which gets cached.
+    # We need to ensure it is not cached yet, otherwise it may impact on the tests
+    build_py.__dict__.pop('data_files', None)
+    dist.reinitialize_command(egg_info)
+
+    # == Sanity check ==
+    # Ensure that if existing_egg_info is not given, build_py attempts to run egg_info
+    build_py.existing_egg_info_dir = None
+    build_py.run()
+    egg_info_run.assert_called()
+
+    # == Remove caches ==
+    egg_info_run.reset_mock()
+    build_py.__dict__.pop('data_files', None)
+    dist.reinitialize_command(egg_info)
+
+    # == Actual test ==
+    # Ensure that if existing_egg_info_dir is given, egg_info doesn't run
+    build_py.existing_egg_info_dir = egg_info_dir
+    build_py.run()
+    egg_info_run.assert_not_called()
+    assert build_py.data_files
+
+    # Make sure the list of outputs is actually OK
+    outputs = map(lambda x: x.replace(os.sep, "/"), build_py.get_outputs())
+    assert outputs
+    example = str(Path(build_py.build_lib, "mypkg/__init__.py")).replace(os.sep, "/")
+    assert example in outputs
+
+
+EXAMPLE_ARBITRARY_MAPPING = {
+    "pyproject.toml": DALS(
+        """
+        [project]
+        name = "mypkg"
+        version = "42"
+
+        [tool.setuptools]
+        packages = ["mypkg", "mypkg.sub1", "mypkg.sub2", "mypkg.sub2.nested"]
+
+        [tool.setuptools.package-dir]
+        "" = "src"
+        "mypkg.sub2" = "src/mypkg/_sub2"
+        "mypkg.sub2.nested" = "other"
+        """
+    ),
+    "src": {
+        "mypkg": {
+            "__init__.py": "",
+            "resource_file.txt": "",
+            "sub1": {
+                "__init__.py": "",
+                "mod1.py": "",
+            },
+            "_sub2": {
+                "mod2.py": "",
+            },
+        },
+    },
+    "other": {
+        "__init__.py": "",
+        "mod3.py": "",
+    },
+    "MANIFEST.in": DALS(
+        """
+        global-include *.py *.txt
+        global-exclude *.py[cod]
+        """
+    ),
+}
+
+
+def test_get_outputs(tmpdir_cwd):
+    jaraco.path.build(EXAMPLE_ARBITRARY_MAPPING)
+    dist = Distribution({"script_name": "%test%"})
+    dist.parse_config_files()
+
+    build_py = dist.get_command_obj("build_py")
+    build_py.editable_mode = True
+    build_py.ensure_finalized()
+    build_lib = build_py.build_lib.replace(os.sep, "/")
+    outputs = {x.replace(os.sep, "/") for x in build_py.get_outputs()}
+    assert outputs == {
+        f"{build_lib}/mypkg/__init__.py",
+        f"{build_lib}/mypkg/resource_file.txt",
+        f"{build_lib}/mypkg/sub1/__init__.py",
+        f"{build_lib}/mypkg/sub1/mod1.py",
+        f"{build_lib}/mypkg/sub2/mod2.py",
+        f"{build_lib}/mypkg/sub2/nested/__init__.py",
+        f"{build_lib}/mypkg/sub2/nested/mod3.py",
+    }
+    mapping = {
+        k.replace(os.sep, "/"): v.replace(os.sep, "/")
+        for k, v in build_py.get_output_mapping().items()
+    }
+    assert mapping == {
+        f"{build_lib}/mypkg/__init__.py": "src/mypkg/__init__.py",
+        f"{build_lib}/mypkg/resource_file.txt": "src/mypkg/resource_file.txt",
+        f"{build_lib}/mypkg/sub1/__init__.py": "src/mypkg/sub1/__init__.py",
+        f"{build_lib}/mypkg/sub1/mod1.py": "src/mypkg/sub1/mod1.py",
+        f"{build_lib}/mypkg/sub2/mod2.py": "src/mypkg/_sub2/mod2.py",
+        f"{build_lib}/mypkg/sub2/nested/__init__.py": "other/__init__.py",
+        f"{build_lib}/mypkg/sub2/nested/mod3.py": "other/mod3.py",
+    }
+
+
+class TestTypeInfoFiles:
+    PYPROJECTS = {
+        "default_pyproject": DALS(
+            """
+            [project]
+            name = "foo"
+            version = "1"
+            """
+        ),
+        "dont_include_package_data": DALS(
+            """
+            [project]
+            name = "foo"
+            version = "1"
+
+            [tool.setuptools]
+            include-package-data = false
+            """
+        ),
+        "exclude_type_info": DALS(
+            """
+            [project]
+            name = "foo"
+            version = "1"
+
+            [tool.setuptools]
+            include-package-data = false
+
+            [tool.setuptools.exclude-package-data]
+            "*" = ["py.typed", "*.pyi"]
+            """
+        ),
+    }
+
+    EXAMPLES = {
+        "simple_namespace": {
+            "directory_structure": {
+                "foo": {
+                    "bar.pyi": "",
+                    "py.typed": "",
+                    "__init__.py": "",
+                }
+            },
+            "expected_type_files": {"foo/bar.pyi", "foo/py.typed"},
+        },
+        "nested_inside_namespace": {
+            "directory_structure": {
+                "foo": {
+                    "bar": {
+                        "py.typed": "",
+                        "mod.pyi": "",
+                    }
+                }
+            },
+            "expected_type_files": {"foo/bar/mod.pyi", "foo/bar/py.typed"},
+        },
+        "namespace_nested_inside_regular": {
+            "directory_structure": {
+                "foo": {
+                    "namespace": {
+                        "foo.pyi": "",
+                    },
+                    "__init__.pyi": "",
+                    "py.typed": "",
+                }
+            },
+            "expected_type_files": {
+                "foo/namespace/foo.pyi",
+                "foo/__init__.pyi",
+                "foo/py.typed",
+            },
+        },
+    }
+
+    @pytest.mark.parametrize(
+        "pyproject",
+        [
+            "default_pyproject",
+            pytest.param(
+                "dont_include_package_data",
+                marks=pytest.mark.xfail(reason="pypa/setuptools#4350"),
+            ),
+        ],
+    )
+    @pytest.mark.parametrize("example", EXAMPLES.keys())
+    def test_type_files_included_by_default(self, tmpdir_cwd, pyproject, example):
+        structure = {
+            **self.EXAMPLES[example]["directory_structure"],
+            "pyproject.toml": self.PYPROJECTS[pyproject],
+        }
+        expected_type_files = self.EXAMPLES[example]["expected_type_files"]
+        jaraco.path.build(structure)
+
+        build_py = get_finalized_build_py()
+        outputs = get_outputs(build_py)
+        assert expected_type_files <= outputs
+
+    @pytest.mark.parametrize("pyproject", ["exclude_type_info"])
+    @pytest.mark.parametrize("example", EXAMPLES.keys())
+    def test_type_files_can_be_excluded(self, tmpdir_cwd, pyproject, example):
+        structure = {
+            **self.EXAMPLES[example]["directory_structure"],
+            "pyproject.toml": self.PYPROJECTS[pyproject],
+        }
+        expected_type_files = self.EXAMPLES[example]["expected_type_files"]
+        jaraco.path.build(structure)
+
+        build_py = get_finalized_build_py()
+        outputs = get_outputs(build_py)
+        assert expected_type_files.isdisjoint(outputs)
+
+    def test_stub_only_package(self, tmpdir_cwd):
+        structure = {
+            "pyproject.toml": DALS(
+                """
+                [project]
+                name = "foo-stubs"
+                version = "1"
+                """
+            ),
+            "foo-stubs": {"__init__.pyi": "", "bar.pyi": ""},
+        }
+        expected_type_files = {"foo-stubs/__init__.pyi", "foo-stubs/bar.pyi"}
+        jaraco.path.build(structure)
+
+        build_py = get_finalized_build_py()
+        outputs = get_outputs(build_py)
+        assert expected_type_files <= outputs
+
+
+def get_finalized_build_py(script_name="%build_py-test%"):
+    dist = Distribution({"script_name": script_name})
+    dist.parse_config_files()
+    build_py = dist.get_command_obj("build_py")
+    build_py.finalize_options()
+    return build_py
+
+
+def get_outputs(build_py):
+    build_dir = Path(build_py.build_lib)
+    return {
+        os.path.relpath(x, build_dir).replace(os.sep, "/")
+        for x in build_py.get_outputs()
+    }

rl/Lib/site-packages/setuptools/tests/test_config_discovery.py

@@ -0,0 +1,647 @@
+import os
+import sys
+from configparser import ConfigParser
+from itertools import product
+from typing import cast
+
+import jaraco.path
+import pytest
+from path import Path
+
+import setuptools  # noqa: F401 # force distutils.core to be patched
+from setuptools.command.sdist import sdist
+from setuptools.discovery import find_package_path, find_parent_package
+from setuptools.dist import Distribution
+from setuptools.errors import PackageDiscoveryError
+
+from .contexts import quiet
+from .integration.helpers import get_sdist_members, get_wheel_members, run
+from .textwrap import DALS
+
+import distutils.core
+
+
+class TestFindParentPackage:
+    def test_single_package(self, tmp_path):
+        # find_parent_package should find a non-namespace parent package
+        (tmp_path / "src/namespace/pkg/nested").mkdir(exist_ok=True, parents=True)
+        (tmp_path / "src/namespace/pkg/nested/__init__.py").touch()
+        (tmp_path / "src/namespace/pkg/__init__.py").touch()
+        packages = ["namespace", "namespace.pkg", "namespace.pkg.nested"]
+        assert find_parent_package(packages, {"": "src"}, tmp_path) == "namespace.pkg"
+
+    def test_multiple_toplevel(self, tmp_path):
+        # find_parent_package should return null if the given list of packages does not
+        # have a single parent package
+        multiple = ["pkg", "pkg1", "pkg2"]
+        for name in multiple:
+            (tmp_path / f"src/{name}").mkdir(exist_ok=True, parents=True)
+            (tmp_path / f"src/{name}/__init__.py").touch()
+        assert find_parent_package(multiple, {"": "src"}, tmp_path) is None
+
+
+class TestDiscoverPackagesAndPyModules:
+    """Make sure discovered values for ``packages`` and ``py_modules`` work
+    similarly to explicit configuration for the simple scenarios.
+    """
+
+    OPTIONS = {
+        # Different options according to the circumstance being tested
+        "explicit-src": {"package_dir": {"": "src"}, "packages": ["pkg"]},
+        "variation-lib": {
+            "package_dir": {"": "lib"},  # variation of the source-layout
+        },
+        "explicit-flat": {"packages": ["pkg"]},
+        "explicit-single_module": {"py_modules": ["pkg"]},
+        "explicit-namespace": {"packages": ["ns", "ns.pkg"]},
+        "automatic-src": {},
+        "automatic-flat": {},
+        "automatic-single_module": {},
+        "automatic-namespace": {},
+    }
+    FILES = {
+        "src": ["src/pkg/__init__.py", "src/pkg/main.py"],
+        "lib": ["lib/pkg/__init__.py", "lib/pkg/main.py"],
+        "flat": ["pkg/__init__.py", "pkg/main.py"],
+        "single_module": ["pkg.py"],
+        "namespace": ["ns/pkg/__init__.py"],
+    }
+
+    def _get_info(self, circumstance):
+        _, _, layout = circumstance.partition("-")
+        files = self.FILES[layout]
+        options = self.OPTIONS[circumstance]
+        return files, options
+
+    @pytest.mark.parametrize("circumstance", OPTIONS.keys())
+    def test_sdist_filelist(self, tmp_path, circumstance):
+        files, options = self._get_info(circumstance)
+        _populate_project_dir(tmp_path, files, options)
+
+        _, cmd = _run_sdist_programatically(tmp_path, options)
+
+        manifest = [f.replace(os.sep, "/") for f in cmd.filelist.files]
+        for file in files:
+            assert any(f.endswith(file) for f in manifest)
+
+    @pytest.mark.parametrize("circumstance", OPTIONS.keys())
+    def test_project(self, tmp_path, circumstance):
+        files, options = self._get_info(circumstance)
+        _populate_project_dir(tmp_path, files, options)
+
+        # Simulate a pre-existing `build` directory
+        (tmp_path / "build").mkdir()
+        (tmp_path / "build/lib").mkdir()
+        (tmp_path / "build/bdist.linux-x86_64").mkdir()
+        (tmp_path / "build/bdist.linux-x86_64/file.py").touch()
+        (tmp_path / "build/lib/__init__.py").touch()
+        (tmp_path / "build/lib/file.py").touch()
+        (tmp_path / "dist").mkdir()
+        (tmp_path / "dist/file.py").touch()
+
+        _run_build(tmp_path)
+
+        sdist_files = get_sdist_members(next(tmp_path.glob("dist/*.tar.gz")))
+        print("~~~~~ sdist_members ~~~~~")
+        print('\n'.join(sdist_files))
+        assert sdist_files >= set(files)
+
+        wheel_files = get_wheel_members(next(tmp_path.glob("dist/*.whl")))
+        print("~~~~~ wheel_members ~~~~~")
+        print('\n'.join(wheel_files))
+        orig_files = {f.replace("src/", "").replace("lib/", "") for f in files}
+        assert wheel_files >= orig_files
+
+        # Make sure build files are not included by mistake
+        for file in wheel_files:
+            assert "build" not in files
+            assert "dist" not in files
+
+    PURPOSEFULLY_EMPY = {
+        "setup.cfg": DALS(
+            """
+            [metadata]
+            name = myproj
+            version = 0.0.0
+
+            [options]
+            {param} =
+            """
+        ),
+        "setup.py": DALS(
+            """
+            __import__('setuptools').setup(
+                name="myproj",
+                version="0.0.0",
+                {param}=[]
+            )
+            """
+        ),
+        "pyproject.toml": DALS(
+            """
+            [build-system]
+            requires = []
+            build-backend = 'setuptools.build_meta'
+
+            [project]
+            name = "myproj"
+            version = "0.0.0"
+
+            [tool.setuptools]
+            {param} = []
+            """
+        ),
+        "template-pyproject.toml": DALS(
+            """
+            [build-system]
+            requires = []
+            build-backend = 'setuptools.build_meta'
+            """
+        ),
+    }
+
+    @pytest.mark.parametrize(
+        "config_file, param, circumstance",
+        product(
+            ["setup.cfg", "setup.py", "pyproject.toml"],
+            ["packages", "py_modules"],
+            FILES.keys(),
+        ),
+    )
+    def test_purposefully_empty(self, tmp_path, config_file, param, circumstance):
+        files = self.FILES[circumstance] + ["mod.py", "other.py", "src/pkg/__init__.py"]
+        _populate_project_dir(tmp_path, files, {})
+
+        if config_file == "pyproject.toml":
+            template_param = param.replace("_", "-")
+        else:
+            # Make sure build works with or without setup.cfg
+            pyproject = self.PURPOSEFULLY_EMPY["template-pyproject.toml"]
+            (tmp_path / "pyproject.toml").write_text(pyproject, encoding="utf-8")
+            template_param = param
+
+        config = self.PURPOSEFULLY_EMPY[config_file].format(param=template_param)
+        (tmp_path / config_file).write_text(config, encoding="utf-8")
+
+        dist = _get_dist(tmp_path, {})
+        # When either parameter package or py_modules is an empty list,
+        # then there should be no discovery
+        assert getattr(dist, param) == []
+        other = {"py_modules": "packages", "packages": "py_modules"}[param]
+        assert getattr(dist, other) is None
+
+    @pytest.mark.parametrize(
+        "extra_files, pkgs",
+        [
+            (["venv/bin/simulate_venv"], {"pkg"}),
+            (["pkg-stubs/__init__.pyi"], {"pkg", "pkg-stubs"}),
+            (["other-stubs/__init__.pyi"], {"pkg", "other-stubs"}),
+            (
+                # Type stubs can also be namespaced
+                ["namespace-stubs/pkg/__init__.pyi"],
+                {"pkg", "namespace-stubs", "namespace-stubs.pkg"},
+            ),
+            (
+                # Just the top-level package can have `-stubs`, ignore nested ones
+                ["namespace-stubs/pkg-stubs/__init__.pyi"],
+                {"pkg", "namespace-stubs"},
+            ),
+            (["_hidden/file.py"], {"pkg"}),
+            (["news/finalize.py"], {"pkg"}),
+        ],
+    )
+    def test_flat_layout_with_extra_files(self, tmp_path, extra_files, pkgs):
+        files = self.FILES["flat"] + extra_files
+        _populate_project_dir(tmp_path, files, {})
+        dist = _get_dist(tmp_path, {})
+        assert set(dist.packages) == pkgs
+
+    @pytest.mark.parametrize(
+        "extra_files",
+        [
+            ["other/__init__.py"],
+            ["other/finalize.py"],
+        ],
+    )
+    def test_flat_layout_with_dangerous_extra_files(self, tmp_path, extra_files):
+        files = self.FILES["flat"] + extra_files
+        _populate_project_dir(tmp_path, files, {})
+        with pytest.raises(PackageDiscoveryError, match="multiple (packages|modules)"):
+            _get_dist(tmp_path, {})
+
+    def test_flat_layout_with_single_module(self, tmp_path):
+        files = self.FILES["single_module"] + ["invalid-module-name.py"]
+        _populate_project_dir(tmp_path, files, {})
+        dist = _get_dist(tmp_path, {})
+        assert set(dist.py_modules) == {"pkg"}
+
+    def test_flat_layout_with_multiple_modules(self, tmp_path):
+        files = self.FILES["single_module"] + ["valid_module_name.py"]
+        _populate_project_dir(tmp_path, files, {})
+        with pytest.raises(PackageDiscoveryError, match="multiple (packages|modules)"):
+            _get_dist(tmp_path, {})
+
+    def test_py_modules_when_wheel_dir_is_cwd(self, tmp_path):
+        """Regression for issue 3692"""
+        from setuptools import build_meta
+
+        pyproject = '[project]\nname = "test"\nversion = "1"'
+        (tmp_path / "pyproject.toml").write_text(DALS(pyproject), encoding="utf-8")
+        (tmp_path / "foo.py").touch()
+        with jaraco.path.DirectoryStack().context(tmp_path):
+            build_meta.build_wheel(".")
+        # Ensure py_modules are found
+        wheel_files = get_wheel_members(next(tmp_path.glob("*.whl")))
+        assert "foo.py" in wheel_files
+
+
+class TestNoConfig:
+    DEFAULT_VERSION = "0.0.0"  # Default version given by setuptools
+
+    EXAMPLES = {
+        "pkg1": ["src/pkg1.py"],
+        "pkg2": ["src/pkg2/__init__.py"],
+        "pkg3": ["src/pkg3/__init__.py", "src/pkg3-stubs/__init__.py"],
+        "pkg4": ["pkg4/__init__.py", "pkg4-stubs/__init__.py"],
+        "ns.nested.pkg1": ["src/ns/nested/pkg1/__init__.py"],
+        "ns.nested.pkg2": ["ns/nested/pkg2/__init__.py"],
+    }
+
+    @pytest.mark.parametrize("example", EXAMPLES.keys())
+    def test_discover_name(self, tmp_path, example):
+        _populate_project_dir(tmp_path, self.EXAMPLES[example], {})
+        dist = _get_dist(tmp_path, {})
+        assert dist.get_name() == example
+
+    def test_build_with_discovered_name(self, tmp_path):
+        files = ["src/ns/nested/pkg/__init__.py"]
+        _populate_project_dir(tmp_path, files, {})
+        _run_build(tmp_path, "--sdist")
+        # Expected distribution file
+        dist_file = tmp_path / f"dist/ns_nested_pkg-{self.DEFAULT_VERSION}.tar.gz"
+        assert dist_file.is_file()
+
+
+class TestWithAttrDirective:
+    @pytest.mark.parametrize(
+        "folder, opts",
+        [
+            ("src", {}),
+            ("lib", {"packages": "find:", "packages.find": {"where": "lib"}}),
+        ],
+    )
+    def test_setupcfg_metadata(self, tmp_path, folder, opts):
+        files = [f"{folder}/pkg/__init__.py", "setup.cfg"]
+        _populate_project_dir(tmp_path, files, opts)
+
+        config = (tmp_path / "setup.cfg").read_text(encoding="utf-8")
+        overwrite = {
+            folder: {"pkg": {"__init__.py": "version = 42"}},
+            "setup.cfg": "[metadata]\nversion = attr: pkg.version\n" + config,
+        }
+        jaraco.path.build(overwrite, prefix=tmp_path)
+
+        dist = _get_dist(tmp_path, {})
+        assert dist.get_name() == "pkg"
+        assert dist.get_version() == "42"
+        assert dist.package_dir
+        package_path = find_package_path("pkg", dist.package_dir, tmp_path)
+        assert os.path.exists(package_path)
+        assert folder in Path(package_path).parts()
+
+        _run_build(tmp_path, "--sdist")
+        dist_file = tmp_path / "dist/pkg-42.tar.gz"
+        assert dist_file.is_file()
+
+    def test_pyproject_metadata(self, tmp_path):
+        _populate_project_dir(tmp_path, ["src/pkg/__init__.py"], {})
+
+        overwrite = {
+            "src": {"pkg": {"__init__.py": "version = 42"}},
+            "pyproject.toml": (
+                "[project]\nname = 'pkg'\ndynamic = ['version']\n"
+                "[tool.setuptools.dynamic]\nversion = {attr = 'pkg.version'}\n"
+            ),
+        }
+        jaraco.path.build(overwrite, prefix=tmp_path)
+
+        dist = _get_dist(tmp_path, {})
+        assert dist.get_version() == "42"
+        assert dist.package_dir == {"": "src"}
+
+
+class TestWithCExtension:
+    def _simulate_package_with_extension(self, tmp_path):
+        # This example is based on: https://github.com/nucleic/kiwi/tree/1.4.0
+        files = [
+            "benchmarks/file.py",
+            "docs/Makefile",
+            "docs/requirements.txt",
+            "docs/source/conf.py",
+            "proj/header.h",
+            "proj/file.py",
+            "py/proj.cpp",
+            "py/other.cpp",
+            "py/file.py",
+            "py/py.typed",
+            "py/tests/test_proj.py",
+            "README.rst",
+        ]
+        _populate_project_dir(tmp_path, files, {})
+
+        setup_script = """
+            from setuptools import Extension, setup
+
+            ext_modules = [
+                Extension(
+                    "proj",
+                    ["py/proj.cpp", "py/other.cpp"],
+                    include_dirs=["."],
+                    language="c++",
+                ),
+            ]
+            setup(ext_modules=ext_modules)
+        """
+        (tmp_path / "setup.py").write_text(DALS(setup_script), encoding="utf-8")
+
+    def test_skip_discovery_with_setupcfg_metadata(self, tmp_path):
+        """Ensure that auto-discovery is not triggered when the project is based on
+        C-extensions only, for backward compatibility.
+        """
+        self._simulate_package_with_extension(tmp_path)
+
+        pyproject = """
+            [build-system]
+            requires = []
+            build-backend = 'setuptools.build_meta'
+        """
+        (tmp_path / "pyproject.toml").write_text(DALS(pyproject), encoding="utf-8")
+
+        setupcfg = """
+            [metadata]
+            name = proj
+            version = 42
+        """
+        (tmp_path / "setup.cfg").write_text(DALS(setupcfg), encoding="utf-8")
+
+        dist = _get_dist(tmp_path, {})
+        assert dist.get_name() == "proj"
+        assert dist.get_version() == "42"
+        assert dist.py_modules is None
+        assert dist.packages is None
+        assert len(dist.ext_modules) == 1
+        assert dist.ext_modules[0].name == "proj"
+
+    def test_dont_skip_discovery_with_pyproject_metadata(self, tmp_path):
+        """When opting-in to pyproject.toml metadata, auto-discovery will be active if
+        the package lists C-extensions, but does not configure py-modules or packages.
+
+        This way we ensure users with complex package layouts that would lead to the
+        discovery of multiple top-level modules/packages see errors and are forced to
+        explicitly set ``packages`` or ``py-modules``.
+        """
+        self._simulate_package_with_extension(tmp_path)
+
+        pyproject = """
+            [project]
+            name = 'proj'
+            version = '42'
+        """
+        (tmp_path / "pyproject.toml").write_text(DALS(pyproject), encoding="utf-8")
+        with pytest.raises(PackageDiscoveryError, match="multiple (packages|modules)"):
+            _get_dist(tmp_path, {})
+
+
+class TestWithPackageData:
+    def _simulate_package_with_data_files(self, tmp_path, src_root):
+        files = [
+            f"{src_root}/proj/__init__.py",
+            f"{src_root}/proj/file1.txt",
+            f"{src_root}/proj/nested/file2.txt",
+        ]
+        _populate_project_dir(tmp_path, files, {})
+
+        manifest = """
+            global-include *.py *.txt
+        """
+        (tmp_path / "MANIFEST.in").write_text(DALS(manifest), encoding="utf-8")
+
+    EXAMPLE_SETUPCFG = """
+    [metadata]
+    name = proj
+    version = 42
+
+    [options]
+    include_package_data = True
+    """
+    EXAMPLE_PYPROJECT = """
+    [project]
+    name = "proj"
+    version = "42"
+    """
+
+    PYPROJECT_PACKAGE_DIR = """
+    [tool.setuptools]
+    package-dir = {"" = "src"}
+    """
+
+    @pytest.mark.parametrize(
+        "src_root, files",
+        [
+            (".", {"setup.cfg": DALS(EXAMPLE_SETUPCFG)}),
+            (".", {"pyproject.toml": DALS(EXAMPLE_PYPROJECT)}),
+            ("src", {"setup.cfg": DALS(EXAMPLE_SETUPCFG)}),
+            ("src", {"pyproject.toml": DALS(EXAMPLE_PYPROJECT)}),
+            (
+                "src",
+                {
+                    "setup.cfg": DALS(EXAMPLE_SETUPCFG)
+                    + DALS(
+                        """
+                        packages = find:
+                        package_dir =
+                            =src
+
+                        [options.packages.find]
+                        where = src
+                        """
+                    )
+                },
+            ),
+            (
+                "src",
+                {
+                    "pyproject.toml": DALS(EXAMPLE_PYPROJECT)
+                    + DALS(
+                        """
+                        [tool.setuptools]
+                        package-dir = {"" = "src"}
+                        """
+                    )
+                },
+            ),
+        ],
+    )
+    def test_include_package_data(self, tmp_path, src_root, files):
+        """
+        Make sure auto-discovery does not affect package include_package_data.
+        See issue #3196.
+        """
+        jaraco.path.build(files, prefix=str(tmp_path))
+        self._simulate_package_with_data_files(tmp_path, src_root)
+
+        expected = {
+            os.path.normpath(f"{src_root}/proj/file1.txt").replace(os.sep, "/"),
+            os.path.normpath(f"{src_root}/proj/nested/file2.txt").replace(os.sep, "/"),
+        }
+
+        _run_build(tmp_path)
+
+        sdist_files = get_sdist_members(next(tmp_path.glob("dist/*.tar.gz")))
+        print("~~~~~ sdist_members ~~~~~")
+        print('\n'.join(sdist_files))
+        assert sdist_files >= expected
+
+        wheel_files = get_wheel_members(next(tmp_path.glob("dist/*.whl")))
+        print("~~~~~ wheel_members ~~~~~")
+        print('\n'.join(wheel_files))
+        orig_files = {f.replace("src/", "").replace("lib/", "") for f in expected}
+        assert wheel_files >= orig_files
+
+
+def test_compatible_with_numpy_configuration(tmp_path):
+    files = [
+        "dir1/__init__.py",
+        "dir2/__init__.py",
+        "file.py",
+    ]
+    _populate_project_dir(tmp_path, files, {})
+    dist = Distribution({})
+    dist.configuration = object()
+    dist.set_defaults()
+    assert dist.py_modules is None
+    assert dist.packages is None
+
+
+def test_name_discovery_doesnt_break_cli(tmpdir_cwd):
+    jaraco.path.build({"pkg.py": ""})
+    dist = Distribution({})
+    dist.script_args = ["--name"]
+    dist.set_defaults()
+    dist.parse_command_line()  # <-- no exception should be raised here.
+    assert dist.get_name() == "pkg"
+
+
+def test_preserve_explicit_name_with_dynamic_version(tmpdir_cwd, monkeypatch):
+    """According to #3545 it seems that ``name`` discovery is running,
+    even when the project already explicitly sets it.
+    This seems to be related to parsing of dynamic versions (via ``attr`` directive),
+    which requires the auto-discovery of ``package_dir``.
+    """
+    files = {
+        "src": {
+            "pkg": {"__init__.py": "__version__ = 42\n"},
+        },
+        "pyproject.toml": DALS(
+            """
+            [project]
+            name = "myproj"  # purposefully different from package name
+            dynamic = ["version"]
+            [tool.setuptools.dynamic]
+            version = {"attr" = "pkg.__version__"}
+            """
+        ),
+    }
+    jaraco.path.build(files)
+    dist = Distribution({})
+    orig_analyse_name = dist.set_defaults.analyse_name
+
+    def spy_analyse_name():
+        # We can check if name discovery was triggered by ensuring the original
+        # name remains instead of the package name.
+        orig_analyse_name()
+        assert dist.get_name() == "myproj"
+
+    monkeypatch.setattr(dist.set_defaults, "analyse_name", spy_analyse_name)
+    dist.parse_config_files()
+    assert dist.get_version() == "42"
+    assert set(dist.packages) == {"pkg"}
+
+
+def _populate_project_dir(root, files, options):
+    # NOTE: Currently pypa/build will refuse to build the project if no
+    # `pyproject.toml` or `setup.py` is found. So it is impossible to do
+    # completely "config-less" projects.
+    basic = {
+        "setup.py": "import setuptools\nsetuptools.setup()",
+        "README.md": "# Example Package",
+        "LICENSE": "Copyright (c) 2018",
+    }
+    jaraco.path.build(basic, prefix=root)
+    _write_setupcfg(root, options)
+    paths = (root / f for f in files)
+    for path in paths:
+        path.parent.mkdir(exist_ok=True, parents=True)
+        path.touch()
+
+
+def _write_setupcfg(root, options):
+    if not options:
+        print("~~~~~ **NO** setup.cfg ~~~~~")
+        return
+    setupcfg = ConfigParser()
+    setupcfg.add_section("options")
+    for key, value in options.items():
+        if key == "packages.find":
+            setupcfg.add_section(f"options.{key}")
+            setupcfg[f"options.{key}"].update(value)
+        elif isinstance(value, list):
+            setupcfg["options"][key] = ", ".join(value)
+        elif isinstance(value, dict):
+            str_value = "\n".join(f"\t{k} = {v}" for k, v in value.items())
+            setupcfg["options"][key] = "\n" + str_value
+        else:
+            setupcfg["options"][key] = str(value)
+    with open(root / "setup.cfg", "w", encoding="utf-8") as f:
+        setupcfg.write(f)
+    print("~~~~~ setup.cfg ~~~~~")
+    print((root / "setup.cfg").read_text(encoding="utf-8"))
+
+
+def _run_build(path, *flags):
+    cmd = [sys.executable, "-m", "build", "--no-isolation", *flags, str(path)]
+    return run(cmd, env={'DISTUTILS_DEBUG': ''})
+
+
+def _get_dist(dist_path, attrs):
+    root = "/".join(os.path.split(dist_path))  # POSIX-style
+
+    script = dist_path / 'setup.py'
+    if script.exists():
+        with Path(dist_path):
+            dist = cast(
+                Distribution,
+                distutils.core.run_setup("setup.py", {}, stop_after="init"),
+            )
+    else:
+        dist = Distribution(attrs)
+
+    dist.src_root = root
+    dist.script_name = "setup.py"
+    with Path(dist_path):
+        dist.parse_config_files()
+
+    dist.set_defaults()
+    return dist
+
+
+def _run_sdist_programatically(dist_path, attrs):
+    dist = _get_dist(dist_path, attrs)
+    cmd = sdist(dist)
+    cmd.ensure_finalized()
+    assert cmd.distribution.packages or cmd.distribution.py_modules
+
+    with quiet(), Path(dist_path):
+        cmd.run()
+
+    return dist, cmd

rl/Lib/site-packages/setuptools/tests/test_core_metadata.py

@@ -0,0 +1,388 @@
+import functools
+import importlib
+import io
+from email import message_from_string
+
+import pytest
+from packaging.metadata import Metadata
+
+from setuptools import _reqs, sic
+from setuptools._core_metadata import rfc822_escape, rfc822_unescape
+from setuptools.command.egg_info import egg_info, write_requirements
+from setuptools.dist import Distribution
+
+EXAMPLE_BASE_INFO = dict(
+    name="package",
+    version="0.0.1",
+    author="Foo Bar",
+    author_email="foo@bar.net",
+    long_description="Long\ndescription",
+    description="Short description",
+    keywords=["one", "two"],
+)
+
+
+@pytest.mark.parametrize(
+    'content, result',
+    (
+        pytest.param(
+            "Just a single line",
+            None,
+            id="single_line",
+        ),
+        pytest.param(
+            "Multiline\nText\nwithout\nextra indents\n",
+            None,
+            id="multiline",
+        ),
+        pytest.param(
+            "Multiline\n    With\n\nadditional\n  indentation",
+            None,
+            id="multiline_with_indentation",
+        ),
+        pytest.param(
+            "  Leading whitespace",
+            "Leading whitespace",
+            id="remove_leading_whitespace",
+        ),
+        pytest.param(
+            "  Leading whitespace\nIn\n    Multiline comment",
+            "Leading whitespace\nIn\n    Multiline comment",
+            id="remove_leading_whitespace_multiline",
+        ),
+    ),
+)
+def test_rfc822_unescape(content, result):
+    assert (result or content) == rfc822_unescape(rfc822_escape(content))
+
+
+def __read_test_cases():
+    base = EXAMPLE_BASE_INFO
+
+    params = functools.partial(dict, base)
+
+    return [
+        ('Metadata version 1.0', params()),
+        (
+            'Metadata Version 1.0: Short long description',
+            params(
+                long_description='Short long description',
+            ),
+        ),
+        (
+            'Metadata version 1.1: Classifiers',
+            params(
+                classifiers=[
+                    'Programming Language :: Python :: 3',
+                    'Programming Language :: Python :: 3.7',
+                    'License :: OSI Approved :: MIT License',
+                ],
+            ),
+        ),
+        (
+            'Metadata version 1.1: Download URL',
+            params(
+                download_url='https://example.com',
+            ),
+        ),
+        (
+            'Metadata Version 1.2: Requires-Python',
+            params(
+                python_requires='>=3.7',
+            ),
+        ),
+        pytest.param(
+            'Metadata Version 1.2: Project-Url',
+            params(project_urls=dict(Foo='https://example.bar')),
+            marks=pytest.mark.xfail(
+                reason="Issue #1578: project_urls not read",
+            ),
+        ),
+        (
+            'Metadata Version 2.1: Long Description Content Type',
+            params(
+                long_description_content_type='text/x-rst; charset=UTF-8',
+            ),
+        ),
+        (
+            'License',
+            params(
+                license='MIT',
+            ),
+        ),
+        (
+            'License multiline',
+            params(
+                license='This is a long license \nover multiple lines',
+            ),
+        ),
+        pytest.param(
+            'Metadata Version 2.1: Provides Extra',
+            params(provides_extras=['foo', 'bar']),
+            marks=pytest.mark.xfail(reason="provides_extras not read"),
+        ),
+        (
+            'Missing author',
+            dict(
+                name='foo',
+                version='1.0.0',
+                author_email='snorri@sturluson.name',
+            ),
+        ),
+        (
+            'Missing author e-mail',
+            dict(
+                name='foo',
+                version='1.0.0',
+                author='Snorri Sturluson',
+            ),
+        ),
+        (
+            'Missing author and e-mail',
+            dict(
+                name='foo',
+                version='1.0.0',
+            ),
+        ),
+        (
+            'Bypass normalized version',
+            dict(
+                name='foo',
+                version=sic('1.0.0a'),
+            ),
+        ),
+    ]
+
+
+@pytest.mark.parametrize('name,attrs', __read_test_cases())
+def test_read_metadata(name, attrs):
+    dist = Distribution(attrs)
+    metadata_out = dist.metadata
+    dist_class = metadata_out.__class__
+
+    # Write to PKG_INFO and then load into a new metadata object
+    PKG_INFO = io.StringIO()
+
+    metadata_out.write_pkg_file(PKG_INFO)
+    PKG_INFO.seek(0)
+    pkg_info = PKG_INFO.read()
+    assert _valid_metadata(pkg_info)
+
+    PKG_INFO.seek(0)
+    metadata_in = dist_class()
+    metadata_in.read_pkg_file(PKG_INFO)
+
+    tested_attrs = [
+        ('name', dist_class.get_name),
+        ('version', dist_class.get_version),
+        ('author', dist_class.get_contact),
+        ('author_email', dist_class.get_contact_email),
+        ('metadata_version', dist_class.get_metadata_version),
+        ('provides', dist_class.get_provides),
+        ('description', dist_class.get_description),
+        ('long_description', dist_class.get_long_description),
+        ('download_url', dist_class.get_download_url),
+        ('keywords', dist_class.get_keywords),
+        ('platforms', dist_class.get_platforms),
+        ('obsoletes', dist_class.get_obsoletes),
+        ('requires', dist_class.get_requires),
+        ('classifiers', dist_class.get_classifiers),
+        ('project_urls', lambda s: getattr(s, 'project_urls', {})),
+        ('provides_extras', lambda s: getattr(s, 'provides_extras', {})),
+    ]
+
+    for attr, getter in tested_attrs:
+        assert getter(metadata_in) == getter(metadata_out)
+
+
+def __maintainer_test_cases():
+    attrs = {"name": "package", "version": "1.0", "description": "xxx"}
+
+    def merge_dicts(d1, d2):
+        d1 = d1.copy()
+        d1.update(d2)
+
+        return d1
+
+    return [
+        ('No author, no maintainer', attrs.copy()),
+        (
+            'Author (no e-mail), no maintainer',
+            merge_dicts(attrs, {'author': 'Author Name'}),
+        ),
+        (
+            'Author (e-mail), no maintainer',
+            merge_dicts(
+                attrs, {'author': 'Author Name', 'author_email': 'author@name.com'}
+            ),
+        ),
+        (
+            'No author, maintainer (no e-mail)',
+            merge_dicts(attrs, {'maintainer': 'Maintainer Name'}),
+        ),
+        (
+            'No author, maintainer (e-mail)',
+            merge_dicts(
+                attrs,
+                {
+                    'maintainer': 'Maintainer Name',
+                    'maintainer_email': 'maintainer@name.com',
+                },
+            ),
+        ),
+        (
+            'Author (no e-mail), Maintainer (no-email)',
+            merge_dicts(
+                attrs, {'author': 'Author Name', 'maintainer': 'Maintainer Name'}
+            ),
+        ),
+        (
+            'Author (e-mail), Maintainer (e-mail)',
+            merge_dicts(
+                attrs,
+                {
+                    'author': 'Author Name',
+                    'author_email': 'author@name.com',
+                    'maintainer': 'Maintainer Name',
+                    'maintainer_email': 'maintainer@name.com',
+                },
+            ),
+        ),
+        (
+            'No author (e-mail), no maintainer (e-mail)',
+            merge_dicts(
+                attrs,
+                {
+                    'author_email': 'author@name.com',
+                    'maintainer_email': 'maintainer@name.com',
+                },
+            ),
+        ),
+        ('Author unicode', merge_dicts(attrs, {'author': '鉄沢寛'})),
+        ('Maintainer unicode', merge_dicts(attrs, {'maintainer': 'Jan Łukasiewicz'})),
+    ]
+
+
+@pytest.mark.parametrize('name,attrs', __maintainer_test_cases())
+def test_maintainer_author(name, attrs, tmpdir):
+    tested_keys = {
+        'author': 'Author',
+        'author_email': 'Author-email',
+        'maintainer': 'Maintainer',
+        'maintainer_email': 'Maintainer-email',
+    }
+
+    # Generate a PKG-INFO file
+    dist = Distribution(attrs)
+    fn = tmpdir.mkdir('pkg_info')
+    fn_s = str(fn)
+
+    dist.metadata.write_pkg_info(fn_s)
+
+    with open(str(fn.join('PKG-INFO')), 'r', encoding='utf-8') as f:
+        pkg_info = f.read()
+
+    assert _valid_metadata(pkg_info)
+
+    # Drop blank lines and strip lines from default description
+    raw_pkg_lines = pkg_info.splitlines()
+    pkg_lines = list(filter(None, raw_pkg_lines[:-2]))
+
+    pkg_lines_set = set(pkg_lines)
+
+    # Duplicate lines should not be generated
+    assert len(pkg_lines) == len(pkg_lines_set)
+
+    for fkey, dkey in tested_keys.items():
+        val = attrs.get(dkey, None)
+        if val is None:
+            for line in pkg_lines:
+                assert not line.startswith(fkey + ':')
+        else:
+            line = '%s: %s' % (fkey, val)
+            assert line in pkg_lines_set
+
+
+def test_parity_with_metadata_from_pypa_wheel(tmp_path):
+    attrs = dict(
+        **EXAMPLE_BASE_INFO,
+        # Example with complex requirement definition
+        python_requires=">=3.8",
+        install_requires="""
+        packaging==23.2
+        more-itertools==8.8.0; extra == "other"
+        jaraco.text==3.7.0
+        importlib-resources==5.10.2; python_version<"3.8"
+        importlib-metadata==6.0.0 ; python_version<"3.8"
+        colorama>=0.4.4; sys_platform == "win32"
+        """,
+        extras_require={
+            "testing": """
+                pytest >= 6
+                pytest-checkdocs >= 2.4
+                tomli ; \\
+                        # Using stdlib when possible
+                        python_version < "3.11"
+                ini2toml[lite]>=0.9
+                """,
+            "other": [],
+        },
+    )
+    # Generate a PKG-INFO file using setuptools
+    dist = Distribution(attrs)
+    with io.StringIO() as fp:
+        dist.metadata.write_pkg_file(fp)
+        pkg_info = fp.getvalue()
+
+    assert _valid_metadata(pkg_info)
+
+    # Ensure Requires-Dist is present
+    expected = [
+        'Metadata-Version:',
+        'Requires-Python: >=3.8',
+        'Provides-Extra: other',
+        'Provides-Extra: testing',
+        'Requires-Dist: tomli; python_version < "3.11" and extra == "testing"',
+        'Requires-Dist: more-itertools==8.8.0; extra == "other"',
+        'Requires-Dist: ini2toml[lite]>=0.9; extra == "testing"',
+    ]
+    for line in expected:
+        assert line in pkg_info
+
+    # Generate a METADATA file using pypa/wheel for comparison
+    wheel_metadata = importlib.import_module("wheel.metadata")
+    pkginfo_to_metadata = getattr(wheel_metadata, "pkginfo_to_metadata", None)
+
+    if pkginfo_to_metadata is None:
+        pytest.xfail(
+            "wheel.metadata.pkginfo_to_metadata is undefined, "
+            "(this is likely to be caused by API changes in pypa/wheel"
+        )
+
+    # Generate an simplified "egg-info" dir for pypa/wheel to convert
+    egg_info_dir = tmp_path / "pkg.egg-info"
+    egg_info_dir.mkdir(parents=True)
+    (egg_info_dir / "PKG-INFO").write_text(pkg_info, encoding="utf-8")
+    write_requirements(egg_info(dist), egg_info_dir, egg_info_dir / "requires.txt")
+
+    # Get pypa/wheel generated METADATA but normalize requirements formatting
+    metadata_msg = pkginfo_to_metadata(egg_info_dir, egg_info_dir / "PKG-INFO")
+    metadata_deps = set(_reqs.parse(metadata_msg.get_all("Requires-Dist")))
+    metadata_extras = set(metadata_msg.get_all("Provides-Extra"))
+    del metadata_msg["Requires-Dist"]
+    del metadata_msg["Provides-Extra"]
+    pkg_info_msg = message_from_string(pkg_info)
+    pkg_info_deps = set(_reqs.parse(pkg_info_msg.get_all("Requires-Dist")))
+    pkg_info_extras = set(pkg_info_msg.get_all("Provides-Extra"))
+    del pkg_info_msg["Requires-Dist"]
+    del pkg_info_msg["Provides-Extra"]
+
+    # Compare setuptools PKG-INFO x pypa/wheel METADATA
+    assert metadata_msg.as_string() == pkg_info_msg.as_string()
+    assert metadata_deps == pkg_info_deps
+    assert metadata_extras == pkg_info_extras
+
+
+def _valid_metadata(text: str) -> bool:
+    metadata = Metadata.from_email(text, validate=True)  # can raise exceptions
+    return metadata is not None

rl/Lib/site-packages/setuptools/tests/test_depends.py

@@ -0,0 +1,15 @@
+import sys
+
+from setuptools import depends
+
+
+class TestGetModuleConstant:
+    def test_basic(self):
+        """
+        Invoke get_module_constant on a module in
+        the test package.
+        """
+        mod_name = 'setuptools.tests.mod_with_constant'
+        val = depends.get_module_constant(mod_name, 'value')
+        assert val == 'three, sir!'
+        assert 'setuptools.tests.mod_with_constant' not in sys.modules

rl/Lib/site-packages/setuptools/tests/test_develop.py

@@ -0,0 +1,175 @@
+"""develop tests"""
+
+import os
+import pathlib
+import platform
+import subprocess
+import sys
+
+import pytest
+
+from setuptools._path import paths_on_pythonpath
+from setuptools.command.develop import develop
+from setuptools.dist import Distribution
+
+from . import contexts, namespaces
+
+SETUP_PY = """\
+from setuptools import setup
+
+setup(name='foo',
+    packages=['foo'],
+)
+"""
+
+INIT_PY = """print "foo"
+"""
+
+
+@pytest.fixture
+def temp_user(monkeypatch):
+    with contexts.tempdir() as user_base:
+        with contexts.tempdir() as user_site:
+            monkeypatch.setattr('site.USER_BASE', user_base)
+            monkeypatch.setattr('site.USER_SITE', user_site)
+            yield
+
+
+@pytest.fixture
+def test_env(tmpdir, temp_user):
+    target = tmpdir
+    foo = target.mkdir('foo')
+    setup = target / 'setup.py'
+    if setup.isfile():
+        raise ValueError(dir(target))
+    with setup.open('w') as f:
+        f.write(SETUP_PY)
+    init = foo / '__init__.py'
+    with init.open('w') as f:
+        f.write(INIT_PY)
+    with target.as_cwd():
+        yield target
+
+
+class TestDevelop:
+    in_virtualenv = hasattr(sys, 'real_prefix')
+    in_venv = hasattr(sys, 'base_prefix') and sys.base_prefix != sys.prefix
+
+    def test_console_scripts(self, tmpdir):
+        """
+        Test that console scripts are installed and that they reference
+        only the project by name and not the current version.
+        """
+        pytest.skip(
+            "TODO: needs a fixture to cause 'develop' "
+            "to be invoked without mutating environment."
+        )
+        settings = dict(
+            name='foo',
+            packages=['foo'],
+            version='0.0',
+            entry_points={
+                'console_scripts': [
+                    'foocmd = foo:foo',
+                ],
+            },
+        )
+        dist = Distribution(settings)
+        dist.script_name = 'setup.py'
+        cmd = develop(dist)
+        cmd.ensure_finalized()
+        cmd.install_dir = tmpdir
+        cmd.run()
+        # assert '0.0' not in foocmd_text
+
+    @pytest.mark.xfail(reason="legacy behavior retained for compatibility #4167")
+    def test_egg_link_filename(self):
+        settings = dict(
+            name='Foo $$$ Bar_baz-bing',
+        )
+        dist = Distribution(settings)
+        cmd = develop(dist)
+        cmd.ensure_finalized()
+        link = pathlib.Path(cmd.egg_link)
+        assert link.suffix == '.egg-link'
+        assert link.stem == 'Foo_Bar_baz_bing'
+
+
+class TestResolver:
+    """
+    TODO: These tests were written with a minimal understanding
+    of what _resolve_setup_path is intending to do. Come up with
+    more meaningful cases that look like real-world scenarios.
+    """
+
+    def test_resolve_setup_path_cwd(self):
+        assert develop._resolve_setup_path('.', '.', '.') == '.'
+
+    def test_resolve_setup_path_one_dir(self):
+        assert develop._resolve_setup_path('pkgs', '.', 'pkgs') == '../'
+
+    def test_resolve_setup_path_one_dir_trailing_slash(self):
+        assert develop._resolve_setup_path('pkgs/', '.', 'pkgs') == '../'
+
+
+class TestNamespaces:
+    @staticmethod
+    def install_develop(src_dir, target):
+        develop_cmd = [
+            sys.executable,
+            'setup.py',
+            'develop',
+            '--install-dir',
+            str(target),
+        ]
+        with src_dir.as_cwd():
+            with paths_on_pythonpath([str(target)]):
+                subprocess.check_call(develop_cmd)
+
+    @pytest.mark.skipif(
+        bool(os.environ.get("APPVEYOR")),
+        reason="https://github.com/pypa/setuptools/issues/851",
+    )
+    @pytest.mark.skipif(
+        platform.python_implementation() == 'PyPy',
+        reason="https://github.com/pypa/setuptools/issues/1202",
+    )
+    def test_namespace_package_importable(self, tmpdir):
+        """
+        Installing two packages sharing the same namespace, one installed
+        naturally using pip or `--single-version-externally-managed`
+        and the other installed using `develop` should leave the namespace
+        in tact and both packages reachable by import.
+        """
+        pkg_A = namespaces.build_namespace_package(tmpdir, 'myns.pkgA')
+        pkg_B = namespaces.build_namespace_package(tmpdir, 'myns.pkgB')
+        target = tmpdir / 'packages'
+        # use pip to install to the target directory
+        install_cmd = [
+            sys.executable,
+            '-m',
+            'pip',
+            'install',
+            str(pkg_A),
+            '-t',
+            str(target),
+        ]
+        subprocess.check_call(install_cmd)
+        self.install_develop(pkg_B, target)
+        namespaces.make_site_dir(target)
+        try_import = [
+            sys.executable,
+            '-c',
+            'import myns.pkgA; import myns.pkgB',
+        ]
+        with paths_on_pythonpath([str(target)]):
+            subprocess.check_call(try_import)
+
+        # additionally ensure that pkg_resources import works
+        pkg_resources_imp = [
+            sys.executable,
+            '-c',
+            'import pkg_resources',
+        ]
+        with paths_on_pythonpath([str(target)]):
+            subprocess.check_call(pkg_resources_imp)

rl/Lib/site-packages/setuptools/tests/test_dist.py

@@ -0,0 +1,274 @@
+import os
+import re
+import urllib.parse
+import urllib.request
+
+import pytest
+
+from setuptools import Distribution
+from setuptools.dist import check_package_data, check_specifier
+
+from .test_easy_install import make_nspkg_sdist
+from .test_find_packages import ensure_files
+from .textwrap import DALS
+
+from distutils.errors import DistutilsSetupError
+
+
+def test_dist_fetch_build_egg(tmpdir):
+    """
+    Check multiple calls to `Distribution.fetch_build_egg` work as expected.
+    """
+    index = tmpdir.mkdir('index')
+    index_url = urllib.parse.urljoin('file://', urllib.request.pathname2url(str(index)))
+
+    def sdist_with_index(distname, version):
+        dist_dir = index.mkdir(distname)
+        dist_sdist = '%s-%s.tar.gz' % (distname, version)
+        make_nspkg_sdist(str(dist_dir.join(dist_sdist)), distname, version)
+        with dist_dir.join('index.html').open('w') as fp:
+            fp.write(
+                DALS(
+                    """
+                <!DOCTYPE html><html><body>
+                <a href="{dist_sdist}" rel="internal">{dist_sdist}</a><br/>
+                </body></html>
+                """
+                ).format(dist_sdist=dist_sdist)
+            )
+
+    sdist_with_index('barbazquux', '3.2.0')
+    sdist_with_index('barbazquux-runner', '2.11.1')
+    with tmpdir.join('setup.cfg').open('w') as fp:
+        fp.write(
+            DALS(
+                """
+            [easy_install]
+            index_url = {index_url}
+            """
+            ).format(index_url=index_url)
+        )
+    reqs = """
+    barbazquux-runner
+    barbazquux
+    """.split()
+    with tmpdir.as_cwd():
+        dist = Distribution()
+        dist.parse_config_files()
+        resolved_dists = [dist.fetch_build_egg(r) for r in reqs]
+    assert [dist.key for dist in resolved_dists if dist] == reqs
+
+
+EXAMPLE_BASE_INFO = dict(
+    name="package",
+    version="0.0.1",
+    author="Foo Bar",
+    author_email="foo@bar.net",
+    long_description="Long\ndescription",
+    description="Short description",
+    keywords=["one", "two"],
+)
+
+
+def test_provides_extras_deterministic_order():
+    attrs = dict(extras_require=dict(a=['foo'], b=['bar']))
+    dist = Distribution(attrs)
+    assert list(dist.metadata.provides_extras) == ['a', 'b']
+    attrs['extras_require'] = dict(reversed(attrs['extras_require'].items()))
+    dist = Distribution(attrs)
+    assert list(dist.metadata.provides_extras) == ['b', 'a']
+
+
+CHECK_PACKAGE_DATA_TESTS = (
+    # Valid.
+    (
+        {
+            '': ['*.txt', '*.rst'],
+            'hello': ['*.msg'],
+        },
+        None,
+    ),
+    # Not a dictionary.
+    (
+        (
+            ('', ['*.txt', '*.rst']),
+            ('hello', ['*.msg']),
+        ),
+        (
+            "'package_data' must be a dictionary mapping package"
+            " names to lists of string wildcard patterns"
+        ),
+    ),
+    # Invalid key type.
+    (
+        {
+            400: ['*.txt', '*.rst'],
+        },
+        ("keys of 'package_data' dict must be strings (got 400)"),
+    ),
+    # Invalid value type.
+    (
+        {
+            'hello': '*.msg',
+        },
+        (
+            "\"values of 'package_data' dict\" must be of type <tuple[str, ...] | list[str]>"
+            " (got '*.msg')"
+        ),
+    ),
+    # Invalid value type (generators are single use)
+    (
+        {
+            'hello': (x for x in "generator"),
+        },
+        (
+            "\"values of 'package_data' dict\" must be of type <tuple[str, ...] | list[str]>"
+            " (got <generator object"
+        ),
+    ),
+)
+
+
+@pytest.mark.parametrize('package_data, expected_message', CHECK_PACKAGE_DATA_TESTS)
+def test_check_package_data(package_data, expected_message):
+    if expected_message is None:
+        assert check_package_data(None, 'package_data', package_data) is None
+    else:
+        with pytest.raises(DistutilsSetupError, match=re.escape(expected_message)):
+            check_package_data(None, 'package_data', package_data)
+
+
+def test_check_specifier():
+    # valid specifier value
+    attrs = {'name': 'foo', 'python_requires': '>=3.0, !=3.1'}
+    dist = Distribution(attrs)
+    check_specifier(dist, attrs, attrs['python_requires'])
+
+    # invalid specifier value
+    attrs = {'name': 'foo', 'python_requires': ['>=3.0', '!=3.1']}
+    with pytest.raises(DistutilsSetupError):
+        dist = Distribution(attrs)
+
+
+def test_metadata_name():
+    with pytest.raises(DistutilsSetupError, match='missing.*name'):
+        Distribution()._validate_metadata()
+
+
+@pytest.mark.parametrize(
+    "dist_name, py_module",
+    [
+        ("my.pkg", "my_pkg"),
+        ("my-pkg", "my_pkg"),
+        ("my_pkg", "my_pkg"),
+        ("pkg", "pkg"),
+    ],
+)
+def test_dist_default_py_modules(tmp_path, dist_name, py_module):
+    (tmp_path / f"{py_module}.py").touch()
+
+    (tmp_path / "setup.py").touch()
+    (tmp_path / "noxfile.py").touch()
+    # ^-- make sure common tool files are ignored
+
+    attrs = {**EXAMPLE_BASE_INFO, "name": dist_name, "src_root": str(tmp_path)}
+    # Find `py_modules` corresponding to dist_name if not given
+    dist = Distribution(attrs)
+    dist.set_defaults()
+    assert dist.py_modules == [py_module]
+    # When `py_modules` is given, don't do anything
+    dist = Distribution({**attrs, "py_modules": ["explicity_py_module"]})
+    dist.set_defaults()
+    assert dist.py_modules == ["explicity_py_module"]
+    # When `packages` is given, don't do anything
+    dist = Distribution({**attrs, "packages": ["explicity_package"]})
+    dist.set_defaults()
+    assert not dist.py_modules
+
+
+@pytest.mark.parametrize(
+    "dist_name, package_dir, package_files, packages",
+    [
+        ("my.pkg", None, ["my_pkg/__init__.py", "my_pkg/mod.py"], ["my_pkg"]),
+        ("my-pkg", None, ["my_pkg/__init__.py", "my_pkg/mod.py"], ["my_pkg"]),
+        ("my_pkg", None, ["my_pkg/__init__.py", "my_pkg/mod.py"], ["my_pkg"]),
+        ("my.pkg", None, ["my/pkg/__init__.py"], ["my", "my.pkg"]),
+        (
+            "my_pkg",
+            None,
+            ["src/my_pkg/__init__.py", "src/my_pkg2/__init__.py"],
+            ["my_pkg", "my_pkg2"],
+        ),
+        (
+            "my_pkg",
+            {"pkg": "lib", "pkg2": "lib2"},
+            ["lib/__init__.py", "lib/nested/__init__.pyt", "lib2/__init__.py"],
+            ["pkg", "pkg.nested", "pkg2"],
+        ),
+    ],
+)
+def test_dist_default_packages(
+    tmp_path, dist_name, package_dir, package_files, packages
+):
+    ensure_files(tmp_path, package_files)
+
+    (tmp_path / "setup.py").touch()
+    (tmp_path / "noxfile.py").touch()
+    # ^-- should not be included by default
+
+    attrs = {
+        **EXAMPLE_BASE_INFO,
+        "name": dist_name,
+        "src_root": str(tmp_path),
+        "package_dir": package_dir,
+    }
+    # Find `packages` either corresponding to dist_name or inside src
+    dist = Distribution(attrs)
+    dist.set_defaults()
+    assert not dist.py_modules
+    assert not dist.py_modules
+    assert set(dist.packages) == set(packages)
+    # When `py_modules` is given, don't do anything
+    dist = Distribution({**attrs, "py_modules": ["explicit_py_module"]})
+    dist.set_defaults()
+    assert not dist.packages
+    assert set(dist.py_modules) == {"explicit_py_module"}
+    # When `packages` is given, don't do anything
+    dist = Distribution({**attrs, "packages": ["explicit_package"]})
+    dist.set_defaults()
+    assert not dist.py_modules
+    assert set(dist.packages) == {"explicit_package"}
+
+
+@pytest.mark.parametrize(
+    "dist_name, package_dir, package_files",
+    [
+        ("my.pkg.nested", None, ["my/pkg/nested/__init__.py"]),
+        ("my.pkg", None, ["my/pkg/__init__.py", "my/pkg/file.py"]),
+        ("my_pkg", None, ["my_pkg.py"]),
+        ("my_pkg", None, ["my_pkg/__init__.py", "my_pkg/nested/__init__.py"]),
+        ("my_pkg", None, ["src/my_pkg/__init__.py", "src/my_pkg/nested/__init__.py"]),
+        (
+            "my_pkg",
+            {"my_pkg": "lib", "my_pkg.lib2": "lib2"},
+            ["lib/__init__.py", "lib/nested/__init__.pyt", "lib2/__init__.py"],
+        ),
+        # Should not try to guess a name from multiple py_modules/packages
+        ("UNKNOWN", None, ["src/mod1.py", "src/mod2.py"]),
+        ("UNKNOWN", None, ["src/pkg1/__ini__.py", "src/pkg2/__init__.py"]),
+    ],
+)
+def test_dist_default_name(tmp_path, dist_name, package_dir, package_files):
+    """Make sure dist.name is discovered from packages/py_modules"""
+    ensure_files(tmp_path, package_files)
+    attrs = {
+        **EXAMPLE_BASE_INFO,
+        "src_root": "/".join(os.path.split(tmp_path)),  # POSIX-style
+        "package_dir": package_dir,
+    }
+    del attrs["name"]
+
+    dist = Distribution(attrs)
+    dist.set_defaults()
+    assert dist.py_modules or dist.packages
+    assert dist.get_name() == dist_name

rl/Lib/site-packages/setuptools/tests/test_dist_info.py

@@ -0,0 +1,210 @@
+"""Test .dist-info style distributions."""
+
+import pathlib
+import re
+import shutil
+import subprocess
+import sys
+from functools import partial
+
+import pytest
+
+import pkg_resources
+from setuptools.archive_util import unpack_archive
+
+from .textwrap import DALS
+
+read = partial(pathlib.Path.read_text, encoding="utf-8")
+
+
+class TestDistInfo:
+    metadata_base = DALS(
+        """
+        Metadata-Version: 1.2
+        Requires-Dist: splort (==4)
+        Provides-Extra: baz
+        Requires-Dist: quux (>=1.1); extra == 'baz'
+        """
+    )
+
+    @classmethod
+    def build_metadata(cls, **kwargs):
+        lines = ('{key}: {value}\n'.format(**locals()) for key, value in kwargs.items())
+        return cls.metadata_base + ''.join(lines)
+
+    @pytest.fixture
+    def metadata(self, tmpdir):
+        dist_info_name = 'VersionedDistribution-2.718.dist-info'
+        versioned = tmpdir / dist_info_name
+        versioned.mkdir()
+        filename = versioned / 'METADATA'
+        content = self.build_metadata(
+            Name='VersionedDistribution',
+        )
+        filename.write_text(content, encoding='utf-8')
+
+        dist_info_name = 'UnversionedDistribution.dist-info'
+        unversioned = tmpdir / dist_info_name
+        unversioned.mkdir()
+        filename = unversioned / 'METADATA'
+        content = self.build_metadata(
+            Name='UnversionedDistribution',
+            Version='0.3',
+        )
+        filename.write_text(content, encoding='utf-8')
+
+        return str(tmpdir)
+
+    def test_distinfo(self, metadata):
+        dists = dict(
+            (d.project_name, d) for d in pkg_resources.find_distributions(metadata)
+        )
+
+        assert len(dists) == 2, dists
+
+        unversioned = dists['UnversionedDistribution']
+        versioned = dists['VersionedDistribution']
+
+        assert versioned.version == '2.718'  # from filename
+        assert unversioned.version == '0.3'  # from METADATA
+
+    def test_conditional_dependencies(self, metadata):
+        specs = 'splort==4', 'quux>=1.1'
+        requires = list(map(pkg_resources.Requirement.parse, specs))
+
+        for d in pkg_resources.find_distributions(metadata):
+            assert d.requires() == requires[:1]
+            assert d.requires(extras=('baz',)) == [
+                requires[0],
+                pkg_resources.Requirement.parse('quux>=1.1;extra=="baz"'),
+            ]
+            assert d.extras == ['baz']
+
+    def test_invalid_version(self, tmp_path):
+        """
+        Supplying an invalid version crashes dist_info.
+        """
+        config = "[metadata]\nname=proj\nversion=42\n[egg_info]\ntag_build=invalid!!!\n"
+        (tmp_path / "setup.cfg").write_text(config, encoding="utf-8")
+        msg = re.compile("invalid version", re.M | re.I)
+        proc = run_command_inner("dist_info", cwd=tmp_path, check=False)
+        assert proc.returncode
+        assert msg.search(proc.stdout)
+        assert not list(tmp_path.glob("*.dist-info"))
+
+    def test_tag_arguments(self, tmp_path):
+        config = """
+        [metadata]
+        name=proj
+        version=42
+        [egg_info]
+        tag_date=1
+        tag_build=.post
+        """
+        (tmp_path / "setup.cfg").write_text(config, encoding="utf-8")
+
+        print(run_command("dist_info", "--no-date", cwd=tmp_path))
+        dist_info = next(tmp_path.glob("*.dist-info"))
+        assert dist_info.name.startswith("proj-42")
+        shutil.rmtree(dist_info)
+
+        print(run_command("dist_info", "--tag-build", ".a", cwd=tmp_path))
+        dist_info = next(tmp_path.glob("*.dist-info"))
+        assert dist_info.name.startswith("proj-42a")
+
+    @pytest.mark.parametrize("keep_egg_info", (False, True))
+    def test_output_dir(self, tmp_path, keep_egg_info):
+        config = "[metadata]\nname=proj\nversion=42\n"
+        (tmp_path / "setup.cfg").write_text(config, encoding="utf-8")
+        out = tmp_path / "__out"
+        out.mkdir()
+        opts = ["--keep-egg-info"] if keep_egg_info else []
+        run_command("dist_info", "--output-dir", out, *opts, cwd=tmp_path)
+        assert len(list(out.glob("*.dist-info"))) == 1
+        assert len(list(tmp_path.glob("*.dist-info"))) == 0
+        expected_egg_info = int(keep_egg_info)
+        assert len(list(out.glob("*.egg-info"))) == expected_egg_info
+        assert len(list(tmp_path.glob("*.egg-info"))) == 0
+        assert len(list(out.glob("*.__bkp__"))) == 0
+        assert len(list(tmp_path.glob("*.__bkp__"))) == 0
+
+
+class TestWheelCompatibility:
+    """Make sure the .dist-info directory produced with the ``dist_info`` command
+    is the same as the one produced by ``bdist_wheel``.
+    """
+
+    SETUPCFG = DALS(
+        """
+    [metadata]
+    name = {name}
+    version = {version}
+
+    [options]
+    install_requires =
+        foo>=12; sys_platform != "linux"
+
+    [options.extras_require]
+    test = pytest
+
+    [options.entry_points]
+    console_scripts =
+        executable-name = my_package.module:function
+    discover =
+        myproj = my_package.other_module:function
+    """
+    )
+
+    EGG_INFO_OPTS = [
+        # Related: #3088 #2872
+        ("", ""),
+        (".post", "[egg_info]\ntag_build = post\n"),
+        (".post", "[egg_info]\ntag_build = .post\n"),
+        (".post", "[egg_info]\ntag_build = post\ntag_date = 1\n"),
+        (".dev", "[egg_info]\ntag_build = .dev\n"),
+        (".dev", "[egg_info]\ntag_build = .dev\ntag_date = 1\n"),
+        ("a1", "[egg_info]\ntag_build = .a1\n"),
+        ("+local", "[egg_info]\ntag_build = +local\n"),
+    ]
+
+    @pytest.mark.parametrize("name", "my-proj my_proj my.proj My.Proj".split())
+    @pytest.mark.parametrize("version", ["0.42.13"])
+    @pytest.mark.parametrize("suffix, cfg", EGG_INFO_OPTS)
+    def test_dist_info_is_the_same_as_in_wheel(
+        self, name, version, tmp_path, suffix, cfg
+    ):
+        config = self.SETUPCFG.format(name=name, version=version) + cfg
+
+        for i in "dir_wheel", "dir_dist":
+            (tmp_path / i).mkdir()
+            (tmp_path / i / "setup.cfg").write_text(config, encoding="utf-8")
+
+        run_command("bdist_wheel", cwd=tmp_path / "dir_wheel")
+        wheel = next(tmp_path.glob("dir_wheel/dist/*.whl"))
+        unpack_archive(wheel, tmp_path / "unpack")
+        wheel_dist_info = next(tmp_path.glob("unpack/*.dist-info"))
+
+        run_command("dist_info", cwd=tmp_path / "dir_dist")
+        dist_info = next(tmp_path.glob("dir_dist/*.dist-info"))
+
+        assert dist_info.name == wheel_dist_info.name
+        assert dist_info.name.startswith(f"{name.replace('-', '_')}-{version}{suffix}")
+        for file in "METADATA", "entry_points.txt":
+            assert read(dist_info / file) == read(wheel_dist_info / file)
+
+
+def run_command_inner(*cmd, **kwargs):
+    opts = {
+        "stderr": subprocess.STDOUT,
+        "stdout": subprocess.PIPE,
+        "text": True,
+        "encoding": "utf-8",
+        "check": True,
+        **kwargs,
+    }
+    cmd = [sys.executable, "-c", "__import__('setuptools').setup()", *map(str, cmd)]
+    return subprocess.run(cmd, **opts)
+
+
+def run_command(*args, **kwargs):
+    return run_command_inner(*args, **kwargs).stdout

rl/Lib/site-packages/setuptools/tests/test_distutils_adoption.py

@@ -0,0 +1,198 @@
+import os
+import platform
+import sys
+import textwrap
+
+import pytest
+
+IS_PYPY = '__pypy__' in sys.builtin_module_names
+
+_TEXT_KWARGS = {"text": True, "encoding": "utf-8"}  # For subprocess.run
+
+
+def win_sr(env):
+    """
+    On Windows, SYSTEMROOT must be present to avoid
+
+    > Fatal Python error: _Py_HashRandomization_Init: failed to
+    > get random numbers to initialize Python
+    """
+    if env and platform.system() == 'Windows':
+        env['SYSTEMROOT'] = os.environ['SYSTEMROOT']
+    return env
+
+
+def find_distutils(venv, imports='distutils', env=None, **kwargs):
+    py_cmd = 'import {imports}; print(distutils.__file__)'.format(**locals())
+    cmd = ['python', '-c', py_cmd]
+    return venv.run(cmd, env=win_sr(env), **_TEXT_KWARGS, **kwargs)
+
+
+def count_meta_path(venv, env=None):
+    py_cmd = textwrap.dedent(
+        """
+        import sys
+        is_distutils = lambda finder: finder.__class__.__name__ == "DistutilsMetaFinder"
+        print(len(list(filter(is_distutils, sys.meta_path))))
+        """
+    )
+    cmd = ['python', '-c', py_cmd]
+    return int(venv.run(cmd, env=win_sr(env), **_TEXT_KWARGS))
+
+
+skip_without_stdlib_distutils = pytest.mark.skipif(
+    sys.version_info >= (3, 12),
+    reason='stdlib distutils is removed from Python 3.12+',
+)
+
+
+@skip_without_stdlib_distutils
+def test_distutils_stdlib(venv):
+    """
+    Ensure stdlib distutils is used when appropriate.
+    """
+    env = dict(SETUPTOOLS_USE_DISTUTILS='stdlib')
+    assert venv.name not in find_distutils(venv, env=env).split(os.sep)
+    assert count_meta_path(venv, env=env) == 0
+
+
+def test_distutils_local_with_setuptools(venv):
+    """
+    Ensure local distutils is used when appropriate.
+    """
+    env = dict(SETUPTOOLS_USE_DISTUTILS='local')
+    loc = find_distutils(venv, imports='setuptools, distutils', env=env)
+    assert venv.name in loc.split(os.sep)
+    assert count_meta_path(venv, env=env) <= 1
+
+
+@pytest.mark.xfail('IS_PYPY', reason='pypy imports distutils on startup')
+def test_distutils_local(venv):
+    """
+    Even without importing, the setuptools-local copy of distutils is
+    preferred.
+    """
+    env = dict(SETUPTOOLS_USE_DISTUTILS='local')
+    assert venv.name in find_distutils(venv, env=env).split(os.sep)
+    assert count_meta_path(venv, env=env) <= 1
+
+
+def test_pip_import(venv):
+    """
+    Ensure pip can be imported.
+    Regression test for #3002.
+    """
+    cmd = ['python', '-c', 'import pip']
+    venv.run(cmd, **_TEXT_KWARGS)
+
+
+def test_distutils_has_origin():
+    """
+    Distutils module spec should have an origin. #2990.
+    """
+    assert __import__('distutils').__spec__.origin
+
+
+ENSURE_IMPORTS_ARE_NOT_DUPLICATED = r"""
+# Depending on the importlib machinery and _distutils_hack, some imports are
+# duplicated resulting in different module objects being loaded, which prevents
+# patches as shown in #3042.
+# This script provides a way of verifying if this duplication is happening.
+
+from distutils import cmd
+import distutils.command.sdist as sdist
+
+# import last to prevent caching
+from distutils import {imported_module}
+
+for mod in (cmd, sdist):
+    assert mod.{imported_module} == {imported_module}, (
+        f"\n{{mod.dir_util}}\n!=\n{{{imported_module}}}"
+    )
+
+print("success")
+"""
+
+
+@pytest.mark.usefixtures("tmpdir_cwd")
+@pytest.mark.parametrize(
+    "distutils_version, imported_module",
+    [
+        pytest.param("stdlib", "dir_util", marks=skip_without_stdlib_distutils),
+        pytest.param("stdlib", "file_util", marks=skip_without_stdlib_distutils),
+        pytest.param("stdlib", "archive_util", marks=skip_without_stdlib_distutils),
+        ("local", "dir_util"),
+        ("local", "file_util"),
+        ("local", "archive_util"),
+    ],
+)
+def test_modules_are_not_duplicated_on_import(distutils_version, imported_module, venv):
+    env = dict(SETUPTOOLS_USE_DISTUTILS=distutils_version)
+    script = ENSURE_IMPORTS_ARE_NOT_DUPLICATED.format(imported_module=imported_module)
+    cmd = ['python', '-c', script]
+    output = venv.run(cmd, env=win_sr(env), **_TEXT_KWARGS).strip()
+    assert output == "success"
+
+
+ENSURE_LOG_IMPORT_IS_NOT_DUPLICATED = r"""
+import types
+import distutils.dist as dist
+from distutils import log
+if isinstance(dist.log, types.ModuleType):
+    assert dist.log == log, f"\n{dist.log}\n!=\n{log}"
+print("success")
+"""
+
+
+@pytest.mark.usefixtures("tmpdir_cwd")
+@pytest.mark.parametrize(
+    "distutils_version",
+    [
+        "local",
+        pytest.param("stdlib", marks=skip_without_stdlib_distutils),
+    ],
+)
+def test_log_module_is_not_duplicated_on_import(distutils_version, venv):
+    env = dict(SETUPTOOLS_USE_DISTUTILS=distutils_version)
+    cmd = ['python', '-c', ENSURE_LOG_IMPORT_IS_NOT_DUPLICATED]
+    output = venv.run(cmd, env=win_sr(env), **_TEXT_KWARGS).strip()
+    assert output == "success"
+
+
+ENSURE_CONSISTENT_ERROR_FROM_MODIFIED_PY = r"""
+from setuptools.modified import newer
+from {imported_module}.errors import DistutilsError
+
+# Can't use pytest.raises in this context
+try:
+    newer("", "")
+except DistutilsError:
+    print("success")
+else:
+    raise AssertionError("Expected to raise")
+"""
+
+
+@pytest.mark.usefixtures("tmpdir_cwd")
+@pytest.mark.parametrize(
+    "distutils_version, imported_module",
+    [
+        ("local", "distutils"),
+        # Unfortunately we still get ._distutils.errors.DistutilsError with SETUPTOOLS_USE_DISTUTILS=stdlib
+        # But that's a deprecated use-case we don't mind not fully supporting in newer code
+        pytest.param(
+            "stdlib", "setuptools._distutils", marks=skip_without_stdlib_distutils
+        ),
+    ],
+)
+def test_consistent_error_from_modified_py(distutils_version, imported_module, venv):
+    env = dict(SETUPTOOLS_USE_DISTUTILS=distutils_version)
+    cmd = [
+        'python',
+        '-c',
+        ENSURE_CONSISTENT_ERROR_FROM_MODIFIED_PY.format(
+            imported_module=imported_module
+        ),
+    ]
+    output = venv.run(cmd, env=win_sr(env), **_TEXT_KWARGS).strip()
+    assert output == "success"