Setuptools

=======

Bugfixes
--------

- Fixed TypeError in ``msvc.EnvironmentInfo.return_env`` when no runtime redistributables are installed. (1902)

=======

Features
--------

- Added support for defining ``ext-modules`` via ``pyproject.toml``
(**EXPERIMENTAL**, may change in future releases). (4568)


Bugfixes
--------

- Merge with pypa/distutils3dcdf8567, removing the duplicate vendored copy of packaging. (4622)
- Restored ``setuptools.msvc.Environmentinfo`` as it is used externally. (4625)

=======

Features
--------

- Changed the type of error raised by ``setuptools.command.easy_install.CommandSpec.from_param`` on unsupported argument from `AttributeError` to `TypeError` -- by :user:`Avasam` (4548)
- Added detection of ARM64 variant of MSVC -- by :user:`saschanaz` (4553)
- Made ``setuptools.package_index.Credential`` a `typing.NamedTuple` -- by :user:`Avasam` (4585)
- Reraise error from ``setuptools.command.easy_install.auto_chmod`` instead of nonsensical ``TypeError: 'Exception' object is not subscriptable`` -- by :user:`Avasam` (4593)
- Fully typed all collection attributes in ``pkg_resources`` -- by :user:`Avasam` (4598)
- Automatically exclude ``.tox|.nox|.venv`` directories from ``sdist``. (4603)


Deprecations and Removals
-------------------------

- Removed the monkeypatching of distutils._msvccompiler. Now all compiler logic is consolidated in distutils. (4600)
- Synced with pypa/distutils58fe058e4, including consolidating Visual Studio 2017 support (4600, pypa/distutils289), removal of deprecated legacy MSVC compiler modules (pypa/distutils287), suppressing of errors when the home directory is missing (pypa/distutils278), removal of wininst binaries (pypa/distutils282). (4606)


Misc
----

- 4592

=======

Bugfixes
--------

- Remove `abc.ABCMeta` metaclass from abstract classes. `pypa/setuptools4503 <https://github.com/pypa/setuptools/pull/4503>`_ had an unintended consequence of causing potential ``TypeError: metaclass conflict: the metaclass of a derived class must be a (non-strict) subclass of the metaclasses of all its bases`` -- by :user:`Avasam` (#4579)

=======

Features
--------

- Mark abstract base classes and methods with `abc.ABC` and `abc.abstractmethod` -- by :user:`Avasam` (4503)
- Changed the order of type checks in ``setuptools.command.easy_install.CommandSpec.from_param`` to support any `collections.abc.Iterable` of `str` param -- by :user:`Avasam` (4505)


Bugfixes
--------

- Prevent an error in ``bdist_wheel`` if ``compression`` is set to a `str` (even if valid) after finalizing options but before running the command. -- by :user:`Avasam` (4383)
- Raises an exception when ``py_limited_api`` is used in a build with
``Py_GIL_DISABLED``. This is currently not supported (python/cpython111506). (4420)
- Synced with pypa/distutils30b7331 including fix for modified check on empty sources (pypa/distutils284).


Deprecations and Removals
-------------------------

- ``setuptools`` is replacing the usages of :pypi:`ordered_set` with simple
instances of ``dict[Hashable, None]``. This is done to remove the extra
dependency and it is possible because since Python 3.7, ``dict`` maintain
insertion order. (4574)


Misc
----

- 4534, 4546, 4554, 4559, 4565

=======

Features
--------

- Merged with pypa/distutilsb7ee725f3 including: Support for Pathlike objects in data files and extensions (pypa/distutils272, pypa/distutils237), native support for C++ compilers (pypa/distuils228) and removed unused get_msvcr() (pypa/distutils274). (4538)