fix(types): handle generic setup return type#1202
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Signed-off-by: Henry Schreiner <henryfs@princeton.edu>
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Pull request overview
This PR fixes mypy compatibility with the latest types-setuptools versions (>=80.9) by implementing support for TypeVar with the default parameter. The changes add a compatibility layer for TypeVar with default parameter support and update the setup wrapper function to use generic type annotations.
- Adds TypeVar compatibility wrapper in
_compat/typing.pythat supports thedefaultparameter for Python versions < 3.13 - Updates the
setupfunction insetuptools/wrapper.pyto use generic type parameters, allowing proper typing of thedistclassparameter and return type - Updates types-setuptools version constraint to >=80.9, removing the exclusion of a problematic version
Reviewed changes
Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.
| File | Description |
|---|---|
| src/scikit_build_core/_compat/typing.py | Adds TypeVar compatibility wrapper that strips the default parameter at runtime for Python < 3.13 while preserving it for type checking via typing_extensions |
| src/scikit_build_core/setuptools/wrapper.py | Updates setup function signature to use generic TypeVar with default, improving type safety for the distclass parameter and return type |
| .pre-commit-config.yaml | Updates types-setuptools version constraint from >=70.1,!=80.9.0.20251221 to >=80.9 |
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Fix mypy on current types-setuptools versions.