Setuptools

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Breaking Changes
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* 2497: Support for PEP 440 non-conforming versions has been removed. Environments containing packages with non-conforming versions may fail or the packages may not be recognized.

Changes
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* 3769: Replace 'appdirs' with 'platformdirs'.

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Changes
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* 3594: Added ``htmlcov`` to FlatLayoutModuleFinder.DEFAULT_EXCLUDE -- by :user:`demianbrecht`
* 3667: Added a human-readable error description when ``.egg-info`` directory is not writeable -- by :user:`droodev`

Misc
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* 3713: Fixed incomplete ``getattr`` statement that caused problems when accessing
undefined attribute.

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Misc
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* 3709: Fix condition to patch ``distutils.dist.log`` to only apply when using
``distutils`` from the stdlib.

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No significant changes.

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Documentation changes
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* 3689: Documented that ``distutils.cfg`` might be ignored unless
``SETUPTOOLS_USE_DISTUTILS=stdlib``.

Misc
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* 3678: Improve clib builds reproducibility by sorting sources -- by :user:`danigm`
* 3684: Improved exception/traceback when invalid entry-points are specified.
* 3690: Fixed logging errors: 'underlying buffer has been detached' (issue 1631).
* 3693: Merge pypa/distutils3e9d47e with compatibility fix for distutils.log.Log.
* 3695, 3697, 3698, 3699: Changed minor text details (spelling, spaces ...)
* 3696: Removed unnecessary ``coding: utf-8`` annotations
* 3704: Fixed temporary build directories interference with auto-discovery.

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Changes
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* 3674: Sync with pypa/distutilse0787fa, including pypa/distutils183 updating distutils to use the Python logging framework.