[Copilot]

Summary of changes

On PyPy with SETUPTOOLS_USE_DISTUTILS=stdlib, 50+ tests fail because PyPy's own stdlib distutils.command.install.finalize_options() calls sysconfig.is_python_build(True), and PyPy's sysconfig has deprecated the check_home positional argument — raising DeprecationWarning: check_home argument is deprecated and ignored. Since pytest.ini treats unfiltered warnings as errors, this kills the entire test run.

CPython's sysconfig.is_python_build() still accepts check_home silently; the deprecation is PyPy-specific. The warning originates inside PyPy's own stdlib code, so it cannot be fixed at the setuptools level.

Changes

• pytest.ini: Added ignore:check_home argument is deprecated and ignored. filterwarnings entry, consistent with how other PyPy/stdlib-specific warnings are already handled (e.g. ignore:Distutils was imported before setuptools)

Pull Request Checklist

• Changes have tests
• News fragment added in newsfragments/.
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[jaraco]

@copilot Remove the build artifacts. Remember, when working with a jaraco/skeleton-based project, you must first incorporate the shared ignored files in the local checkout (https://github.com/jaraco/skeleton/blob/main/AGENTS.md).

[Copilot]

@copilot Remove the build artifacts. Remember, when working with a jaraco/skeleton-based project, you must first incorporate the shared ignored files in the local checkout (https://github.com/jaraco/s...

Done. Populated .git/info/exclude from jaraco/dotfiles .gitignore_global and removed all the accidentally committed build artifacts (.coverage, setuptools.egg-info/, __pycache__/, and .pyc files) in ebb58bc.

[jaraco]

@copilot Maybe we should consider just removing stdlib distutils for PyPy. Yeah, probably, since Python 3.12 removes it completely. The real value of having PyPy here is to test the implementation and not its distutils.

[Copilot]

@copilot Maybe we should consider just removing stdlib distutils for PyPy. Yeah, probably, since Python 3.12 removes it completely. The real value of having PyPy here is to test the implementation a...

Done in the latest commit — removed distutils: stdlib from the PyPy CI matrix entry (PyPy will now use local/setuptools distutils) and reverted the pytest.ini workaround that was added to handle the PyPy+stdlib case.