=======
Features
--------
- Rework how ``setuptools`` internally handles ``dependencies/install_requires``
and ``optional-dependencies/extras_require``. (3903)
- Improve the generated ``PKG-INFO`` files, by adding ``Requires-Dist`` fields.
Previously, these fields would be omitted in favour of a non-standard
``*.egg-info/requires.txt`` file (which is still generated for the time being). (3904)
- Improve atomicity when writing ``PKG-INFO`` files to avoid race
conditions with ``importlib.metadata``. (3904)
Bugfixes
--------
- Fix the name given to the ``*-nspkg.pth`` files in editable installs,
ensuring they are unique per distribution. (4041)
- Workaround some limitations on ``pkg_resources``-style legacy namespaces in
the meta path finder for editable installations. (4041)
Misc
----
- 4023, 4027, 4027