Setuptools

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Misc
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* 3091: Make ``concurrent.futures`` import lazy in vendored ``more_itertools``
package to a avoid importing threading as a side effect (which caused
`gevent/gevent1865 <https://github.com/gevent/gevent/issues/1865>`__).
-- by :user:`maciejp-ro`

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Misc
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* 3084: When vendoring jaraco packages, ensure the namespace package is converted to a simple package to support zip importer.

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Changes
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* 3085: Setuptools now vendors importlib_resources and importlib_metadata and jaraco.text. Setuptools no longer relies on pkg_resources for ensure_directory nor parse_requirements.

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Misc
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* 3072: Remove lorem_ipsum from jaraco.text when vendored.

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Changes
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* 3061: Vendored jaraco.text and use line processing from that library in pkg_resources.

Misc
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* 3070: Avoid AttributeError in easy_install.create_home_path when sysconfig.get_config_vars values are not strings.

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Changes
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* 3043: Merge with pypa/distutilsbb018f1ac3 including consolidated behavior in sysconfig.get_platform (pypa/distutils104).
* 3057: Don't include optional ``Home-page`` in metadata if no ``url`` is specified. -- by :user:`cdce8p`
* 3062: Merge with pypa/distutilsb53a824ec3 including improved support for lib directories on non-x64 Windows builds.

Documentation changes
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* 2897: Added documentation about wrapping ``setuptools.build_meta`` in a in-tree
custom backend. This is a :pep:`517`-compliant way of dynamically specifying
build dependencies (e.g. when platform, OS and other markers are not enough).
-- by :user:`abravalheri`
* 3034: Replaced occurrences of the defunct distutils-sig mailing list with pointers
to GitHub Discussions.
-- by :user:`ashemedai`
* 3056: The documentation has stopped suggesting to add ``wheel`` to
:pep:`517` requirements -- by :user:`webknjaz`

Misc
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* 3054: Used Py3 syntax ``super().__init__()`` -- by :user:`imba-tjd`