v56.0.0
-------


Deprecations
^^^^^^^^^^^^
* #2620: The ``license_file`` option is now marked as deprecated.
  Use ``license_files`` instead. -- by :user:`cdce8p`

Breaking Changes
^^^^^^^^^^^^^^^^
* #2620: If neither ``license_file`` nor ``license_files`` is specified, the ``sdist``
  option will now auto-include files that match the following patterns:
  ``LICEN[CS]E*``, ``COPYING*``, ``NOTICE*``, ``AUTHORS*``.
  This matches the behavior of ``bdist_wheel``. -- by :user:`cdce8p`

Changes
^^^^^^^
* #2620: The ``license_file`` and ``license_files`` options now support glob patterns. -- by :user:`cdce8p`
* #2632: Implemented ``VendorImporter.find_spec()`` method to get rid
  of ``ImportWarning`` that Python 3.10 emits when only the old-style
  importer hooks are present -- by :user:`webknjaz`

Documentation changes
^^^^^^^^^^^^^^^^^^^^^
* #2620: Added documentation for the ``license_files`` option. -- by :user:`cdce8p`


v55.0.0
-------


Breaking Changes
^^^^^^^^^^^^^^^^
* #2566: Remove the deprecated ``bdist_wininst`` command. Binary packages should be built as wheels instead. -- by :user:`hroncok`


v54.2.0
-------


Changes
^^^^^^^
* #2608: Added informative error message to PEP 517 build failures owing to
  an empty ``setup.py`` -- by :user:`layday`


v54.1.3
-------

No significant changes.


v54.1.2
-------


Misc
^^^^
* #2595: Reduced scope of dash deprecation warning to Setuptools/distutils only -- by :user:`melissa-kun-li`


v54.1.1
-------


Documentation changes
^^^^^^^^^^^^^^^^^^^^^
* #2584: Added ``sphinx-inline-tabs`` extension to allow for comparison of ``setup.py`` and its equivalent ``setup.cfg`` -- by :user:`amy-lei`

Misc
^^^^
* #2592: Made option keys in the ``[metadata]`` section of ``setup.cfg`` case-sensitive. Users having
  uppercase option spellings will get a warning suggesting to make them to lowercase
  -- by :user:`melissa-kun-li`


v54.1.0
-------


Changes
^^^^^^^
* #1608: Removed the conversion of dashes to underscores in the :code:`extras_require` and :code:`data_files` of :code:`setup.cfg` to support the usage of dashes. Method will warn users when they use a dash-separated key which in the future will only allow an underscore. Note: the method performs the dash to underscore conversion to preserve compatibility, but future versions will no longer support it -- by :user:`melissa-kun-li`


v54.0.0
-------


Breaking Changes
^^^^^^^^^^^^^^^^
* #2582: Simplified build-from-source story by providing bootstrapping metadata in a separate egg-info directory. Build requirements no longer include setuptools itself. Sdist once again includes the pyproject.toml. Project can no longer be installed from source on pip 19.x, but install from source is still supported on pip < 19 and pip >= 20 and install from wheel is still supported with pip >= 9.

Changes
^^^^^^^
* #1932: Handled :code:`AttributeError` by raising :code:`DistutilsSetupError` in :code:`dist.check_specifier()` when specifier is not a string -- by :user:`melissa-kun-li`
* #2570: Correctly parse cmdclass in setup.cfg.

Documentation changes
^^^^^^^^^^^^^^^^^^^^^
* #2553: Added userguide example for markers in extras_require -- by :user:`pwoolvett`


v53.1.0
-------


Changes
^^^^^^^
* #1937: Preserved case-sensitivity of keys in setup.cfg so that entry point names are case-sensitive. Changed sensitivity of configparser. NOTE: Any projects relying on case-insensitivity will need to adapt to accept the original case as published. -- by :user:`melissa-kun-li`
* #2573: Fixed error in uploading a Sphinx doc with the :code:`upload_docs` command. An html builder will be used.
  Note: :code:`upload_docs` is deprecated for PyPi, but is supported for other sites -- by :user:`melissa-kun-li`


v53.0.0
-------


Breaking Changes
^^^^^^^^^^^^^^^^
* #1527: Removed bootstrap script. Now Setuptools requires pip or another pep517-compliant builder such as 'build' to build. Now Setuptools can be installed from Github main branch.


v52.0.0
-------


Breaking Changes
^^^^^^^^^^^^^^^^
* #2537: Remove fallback support for fetch_build_eggs using easy_install. Now pip is required for setup_requires to succeed.
* #2544: Removed 'easy_install' top-level model (runpy entry point) and 'easy_install' console script.
* #2545: Removed support for eggsecutables.

Changes
^^^^^^^
* #2459: Tests now run in parallel via pytest-xdist, completing in about half the time. Special thanks to :user:`webknjaz` for hard work implementing test isolation. To run without parallelization, disable the plugin with ``tox -- -p no:xdist``.


v51.3.3
-------


Misc
^^^^
* #2539: Fix AttributeError in Description validation.


v51.3.2
-------


Misc
^^^^
* #1390: Validation of Description field now is more lenient, emitting a warning and mangling the value to be valid (replacing newlines with spaces).


v51.3.1
-------


Misc
^^^^
* #2536: Reverted tag deduplication handling.


v51.3.0
-------


Changes
^^^^^^^
* #1390: Newlines in metadata description/Summary now trigger a ValueError.
* #2481: Define ``create_module()`` and ``exec_module()`` methods in ``VendorImporter``
  to get rid of ``ImportWarning`` -- by :user:`hroncok`
* #2489: ``pkg_resources`` behavior for zipimport now matches the regular behavior, and finds
  ``.egg-info`` (previoulsy would only find ``.dist-info``) -- by :user:`thatch`
* #2529: Fixed an issue where version tags may be added multiple times


v51.2.0
-------


Changes
^^^^^^^
* #2493: Use importlib.import_module() rather than the deprectated loader.load_module()
  in pkg_resources namespace delaration -- by :user:`encukou`

Documentation changes
^^^^^^^^^^^^^^^^^^^^^
* #2525: Fix typo in the document page about entry point. -- by :user:`jtr109`

Misc
^^^^
* #2534: Avoid hitting network during test_easy_install.


v51.1.2
-------


Misc
^^^^
* #2505: Disable inclusion of package data as it causes 'tests' to be included as data.


v51.1.1
-------


Misc
^^^^
* #2534: Avoid hitting network during test_virtualenv.test_test_command.


v51.1.0
-------


Changes
^^^^^^^
* #2486: Project adopts jaraco/skeleton for shared package maintenance.

Misc
^^^^
* #2477: Restore inclusion of rst files in sdist.
* #2484: Setuptools has replaced the master branch with the main branch.
* #2485: Fixed failing test when pip 20.3+ is present.
  -- by :user:`yan12125`
* #2487: Fix tests with pytest 6.2
  -- by :user:`yan12125`


v51.0.0
-------


Breaking Changes
^^^^^^^^^^^^^^^^
* #2435: Require Python 3.6 or later.

Documentation changes
^^^^^^^^^^^^^^^^^^^^^
* #2430: Fixed inconsistent RST title nesting levels caused by #2399
  -- by :user:`webknjaz`
* #2430: Fixed a typo in Sphinx docs that made docs dev section disappear
  as a result of PR #2426 -- by :user:`webknjaz`

Misc
^^^^
* #2471: Removed the tests that guarantee that the vendored dependencies can be built by distutils.


v50.3.2
-------



Documentation changes
^^^^^^^^^^^^^^^^^^^^^
* #2394: Extended towncrier news template to include change note categories.
  This allows to see what types of changes a given version introduces
  -- by :user:`webknjaz`
* #2427: Started enforcing strict syntax and reference validation
  in the Sphinx docs -- by :user:`webknjaz`
* #2428: Removed redundant Sphinx ``Makefile`` support -- by :user:`webknjaz`

Misc
^^^^
* #2401: Enabled test results reporting in AppVeyor CI
  -- by :user:`webknjaz`
* #2420: Replace Python 3.9.0 beta with 3.9.0 final on GitHub Actions.
* #2421: Python 3.9 Trove classifier got added to the dist metadata
  -- by :user:`webknjaz`


v50.3.1
-------



Documentation changes
^^^^^^^^^^^^^^^^^^^^^
* #2093: Finalized doc revamp.
* #2097: doc: simplify index and group deprecated files
* #2102: doc overhaul step 2: break main doc into multiple sections
* #2111: doc overhaul step 3: update userguide
* #2395: Added a ``:user:`` role to Sphinx config -- by :user:`webknjaz`
* #2395: Added an illustrative explanation about the change notes to fragments dir -- by :user:`webknjaz`

Misc
^^^^
* #2379: Travis CI test suite now tests against PPC64.
* #2413: Suppress EOF errors (and other exceptions) when importing lib2to3.


v50.3.0
-------



Changes
^^^^^^^
* #2368: In distutils, restore support for monkeypatched CCompiler.spawn per pypa/distutils#15.


v50.2.0
-------



Changes
^^^^^^^
* #2355: When pip is imported as part of a build, leave distutils patched.
* #2380: There are some setuptools specific changes in the
  ``setuptools.command.bdist_rpm`` module that are no longer needed, because
  they are part of the ``bdist_rpm`` module in distutils in Python
  3.5.0. Therefore, code was removed from ``setuptools.command.bdist_rpm``.


v50.1.0
-------



Changes
^^^^^^^
* #2350: Setuptools reverts using the included distutils by default. Platform maintainers and system integrators and others are *strongly* encouraged to set ``SETUPTOOLS_USE_DISTUTILS=local`` to help identify and work through the reported issues with distutils adoption, mainly to file issues and pull requests with pypa/distutils such that distutils performs as needed across every supported environment.


v50.0.3
-------



Misc
^^^^
* #2363: Restore link_libpython support on Python 3.7 and earlier (see pypa/distutils#9).


v50.0.2
-------



Misc
^^^^
* #2352: In distutils hack, use absolute import rather than relative to avoid bpo-30876.


v50.0.1
-------



Misc
^^^^
* #2357: Restored Python 3.5 support in distutils.util for missing ``subprocess._optim_args_from_interpreter_flags``.
* #2358: Restored AIX support on Python 3.8 and earlier.
* #2361: Add Python 3.10 support to _distutils_hack. Get the 'Loader' abstract class
  from importlib.abc rather than importlib.util.abc (alias removed in Python
  3.10).


v50.0.0
-------



Breaking Changes
^^^^^^^^^^^^^^^^
* #2232: Once again, Setuptools overrides the stdlib distutils on import. For environments or invocations where this behavior is undesirable, users are provided with a temporary escape hatch. If the environment variable ``SETUPTOOLS_USE_DISTUTILS`` is set to ``stdlib``, Setuptools will fall back to the legacy behavior. Use of this escape hatch is discouraged, but it is provided to ease the transition while proper fixes for edge cases can be addressed.

Changes
^^^^^^^
* #2334: In MSVC module, refine text in error message.


v49.6.0
-------



Changes
^^^^^^^
* #2129: In pkg_resources, no longer detect any pathname ending in .egg as a Python egg. Now the path must be an unpacked egg or a zip file.


v49.5.0
-------



Changes
^^^^^^^
* #2306: When running as a PEP 517 backend, setuptools does not try to install
  ``setup_requires`` itself. They are reported as build requirements for the
  frontend to install.


v49.4.0
-------



Changes
^^^^^^^
* #2310: Updated vendored packaging version to 20.4.


v49.3.2
-------



Documentation changes
^^^^^^^^^^^^^^^^^^^^^
* #2300: Improve the ``safe_version`` function documentation

Misc
^^^^
* #2297: Once again, in stubs prefer exec_module to the deprecated load_module.


v49.3.1
-------



Changes
^^^^^^^
* #2316: Removed warning when ``distutils`` is imported before ``setuptools`` when ``distutils`` replacement is not enabled.


v49.3.0
-------



Changes
^^^^^^^
* #2259: Setuptools now provides a .pth file (except for editable installs of setuptools) to the target environment to ensure that when enabled, the setuptools-provided distutils is preferred before setuptools has been imported (and even if setuptools is never imported). Honors the SETUPTOOLS_USE_DISTUTILS environment variable.


v49.2.1
-------



Misc
^^^^
* #2257: Fixed two flaws in distutils._msvccompiler.MSVCCompiler.spawn.


v49.2.0
-------



Changes
^^^^^^^
* #2230: Now warn the user when setuptools is imported after distutils modules have been loaded (exempting PyPy for 3.6), directing the users of packages to import setuptools first.


v49.1.3
-------



Misc
^^^^
* #2212: (Distutils) Allow spawn to accept environment. Avoid monkey-patching global state.
* #2249: Fix extension loading technique in stubs.


v49.1.2
-------



Changes
^^^^^^^
* #2232: In preparation for re-enabling a local copy of distutils, Setuptools now honors an environment variable, SETUPTOOLS_USE_DISTUTILS. If set to 'stdlib' (current default), distutils will be used from the standard library. If set to 'local' (default in a imminent backward-incompatible release), the local copy of distutils will be used.


v49.1.1
-------



Misc
^^^^
* #2094: Removed pkg_resources.py2_warn module, which is no longer reachable.


v49.0.1
-------



Misc
^^^^
* #2228: Applied fix for pypa/distutils#3, restoring expectation that spawn will raise a DistutilsExecError when attempting to execute a missing file.


v49.1.0
-------



Changes
^^^^^^^
* #2228: Disabled distutils adoption for now while emergent issues are addressed.


v49.0.0
-------



Breaking Changes
^^^^^^^^^^^^^^^^
* #2165: Setuptools no longer installs a site.py file during easy_install or develop installs. As a result, .eggs on PYTHONPATH will no longer take precedence over other packages on sys.path. If this issue affects your production environment, please reach out to the maintainers at #2165.

Changes
^^^^^^^
* #2137: Removed (private) pkg_resources.RequirementParseError, now replaced by packaging.requirements.InvalidRequirement. Kept the name for compatibility, but users should catch InvalidRequirement instead.
* #2180: Update vendored packaging in pkg_resources to 19.2.

Misc
^^^^
* #2199: Fix exception causes all over the codebase by using ``raise new_exception from old_exception``


v48.0.0
-------



Breaking Changes
^^^^^^^^^^^^^^^^
* #2143: Setuptools adopts distutils from the Python 3.9 standard library and no longer depends on distutils in the standard library. When importing ``setuptools`` or ``setuptools.distutils_patch``, Setuptools will expose its bundled version as a top-level ``distutils`` package (and unload any previously-imported top-level distutils package), retaining the expectation that ``distutils``' objects are actually Setuptools objects.
  To avoid getting any legacy behavior from the standard library, projects are advised to always "import setuptools" prior to importing anything from distutils. This behavior happens by default when using ``pip install`` or ``pep517.build``. Workflows that rely on ``setup.py (anything)`` will need to first ensure setuptools is imported. One way to achieve this behavior without modifying code is to invoke Python thus: ``python -c "import setuptools; exec(open('setup.py').read())" (anything)``.


v47.3.2
-------



Misc
^^^^
* #2071: Replaced references to the deprecated imp package with references to importlib


v47.3.1
-------



Misc
^^^^
* #1973: Removed ``pkg_resources.py31compat.makedirs`` in favor of the stdlib. Use ``os.makedirs()`` instead.
* #2198: Restore ``__requires__`` directive in easy-install wrapper scripts.


v47.3.0
-------



Changes
^^^^^^^
* #2197: Console script wrapper for editable installs now has a unified template and honors importlib_metadata if present for faster script execution on older Pythons.

Misc
^^^^
* #2195: Fix broken entry points generated by easy-install (pip editable installs).


v47.2.0
-------



Changes
^^^^^^^
* #2194: Editable-installed entry points now load significantly faster on Python versions 3.8+.
* #1471: Incidentally fixed by #2194 on Python 3.8 or when importlib_metadata is present.


v47.1.1
-------



Documentation changes
^^^^^^^^^^^^^^^^^^^^^
* #2156: Update mailing list pointer in developer docs

Incorporate changes from v44.1.1:
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

* #2158: Avoid loading working set during ``Distribution.finalize_options`` prior to invoking ``_install_setup_requires``, broken since v42.0.0.


v44.1.1
-------



Misc
^^^^
* #2158: Avoid loading working set during ``Distribution.finalize_options`` prior to invoking ``_install_setup_requires``, broken since v42.0.0.


v47.1.0
-------



Changes
^^^^^^^
* #2070: In wheel-to-egg conversion, use simple pkg_resources-style namespace declaration for packages that declare namespace_packages.


v47.0.0
-------



Breaking Changes
^^^^^^^^^^^^^^^^
* #2094: Setuptools now actively crashes under Python 2. Python 3.5 or later is required. Users of Python 2 should use ``setuptools<45``.

Changes
^^^^^^^
* #1700: Document all supported keywords by migrating the ones from distutils.


v46.4.0
-------



Changes
^^^^^^^
* #1753: ``attr:`` now extracts variables through rudimentary examination of the AST,
  thereby supporting modules with third-party imports. If examining the AST
  fails to find the variable, ``attr:`` falls back to the old behavior of
  importing the module. Works on Python 3 only.


v46.3.1
-------

No significant changes.


v46.3.0
-------



Changes
^^^^^^^
* #2089: Package index functionality no longer attempts to remove an md5 fragment from the index URL. This functionality, added for distribute #163 is no longer relevant.

Misc
^^^^
* #2041: Preserve file modes during pkg files copying, but clear read only flag for target afterwards.
* #2105: Filter ``2to3`` deprecation warnings from ``TestDevelop.test_2to3_user_mode``.


v46.2.0
-------



Changes
^^^^^^^
* #2040: Deprecated the ``bdist_wininst`` command. Binary packages should be built as wheels instead.
* #2062: Change 'Mac OS X' to 'macOS' in code.
* #2075: Stop recognizing files ending with ``.dist-info`` as distribution metadata.
* #2086: Deprecate 'use_2to3' functionality. Packagers are encouraged to use single-source solutions or build tool chains to manage conversions outside of setuptools.

Documentation changes
^^^^^^^^^^^^^^^^^^^^^
* #1698: Added documentation for ``build_meta`` (a bare minimum, not completed).

Misc
^^^^
* #2082: Filter ``lib2to3`` ``PendingDeprecationWarning`` and ``DeprecationWarning`` in tests,
  because ``lib2to3`` is `deprecated in Python 3.9 <https://bugs.python.org/issue40360>`_.


v46.1.3
-------

No significant changes.


v46.1.2
-------



Misc
^^^^
* #1458: Added template for reporting Python 2 incompatibilities.


v46.1.1
-------

No significant changes.


v46.1.0
-------



Changes
^^^^^^^
* #308: Allow version number normalization to be bypassed by wrapping in a 'setuptools.sic()' call.
* #1424: Prevent keeping files mode for package_data build. It may break a build if user's package data has read only flag.
* #1431: In ``easy_install.check_site_dir``, ensure the installation directory exists.
* #1563: In ``pkg_resources`` prefer ``find_spec`` (PEP 451) to ``find_module``.

Incorporate changes from v44.1.0:
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

* #1704: Set sys.argv[0] in setup script run by build_meta.__legacy__
* #1959: Fix for Python 4: replace unsafe six.PY3 with six.PY2
* #1994: Fixed a bug in the "setuptools.finalize_distribution_options" hook that lead to ignoring the order attribute of entry points managed by this hook.


v44.1.0
-------



Changes
^^^^^^^
* #1704: Set sys.argv[0] in setup script run by build_meta.__legacy__
* #1959: Fix for Python 4: replace unsafe six.PY3 with six.PY2
* #1994: Fixed a bug in the "setuptools.finalize_distribution_options" hook that lead to ignoring the order attribute of entry points managed by this hook.


v46.0.0
-------



Breaking Changes
^^^^^^^^^^^^^^^^
* #65: Once again as in 3.0, removed the Features feature.

Changes
^^^^^^^
* #1890: Fix vendored dependencies so importing ``setuptools.extern.some_module`` gives the same object as ``setuptools._vendor.some_module``. This makes Metadata picklable again.
* #1899: Test suite now fails on warnings.

Documentation changes
^^^^^^^^^^^^^^^^^^^^^
* #2011: Fix broken link to distutils docs on package_data

Misc
^^^^
* #1991: Include pkg_resources test data in sdist, so tests can be executed from it.


v45.3.0
-------



Changes
^^^^^^^
* #1557: Deprecated eggsecutable scripts and updated docs.
* #1904: Update msvc.py to use CPython 3.8.0 mechanism to find msvc 14+


v45.2.0
-------



Changes
^^^^^^^
* #1905: Fixed defect in _imp, introduced in 41.6.0 when the 'tests' directory is not present.
* #1941: Improve editable installs with PEP 518 build isolation:

  * The ``--user`` option is now always available. A warning is issued if the user site directory is not available.
  * The error shown when the install directory is not in ``PYTHONPATH`` has been turned into a warning.
* #1981: Setuptools now declares its ``tests`` and ``docs`` dependencies in metadata (extras).
* #1985: Add support for installing scripts in environments where bdist_wininst is missing (i.e. Python 3.9).

Misc
^^^^
* #1968: Add flake8-2020 to check for misuse of sys.version or sys.version_info.


v45.1.0
-------



Changes
^^^^^^^
* #1458: Add minimum sunset date and preamble to Python 2 warning.
* #1704: Set sys.argv[0] in setup script run by build_meta.__legacy__
* #1974: Add Python 3 Only Trove Classifier and remove universal wheel declaration for more complete transition from Python 2.


v45.0.0
-------



Breaking Changes
^^^^^^^^^^^^^^^^
* #1458: Drop support for Python 2. Setuptools now requires Python 3.5 or later. Install setuptools using pip >=9 or pin to Setuptools <45 to maintain 2.7 support.

Changes
^^^^^^^
* #1959: Fix for Python 4: replace unsafe six.PY3 with six.PY2


v44.0.0
-------



Breaking Changes
^^^^^^^^^^^^^^^^
* #1908: Drop support for Python 3.4.


v43.0.0
-------



Breaking Changes
^^^^^^^^^^^^^^^^
* #1634: Include ``pyproject.toml`` in source distribution by default. Projects relying on the previous behavior where ``pyproject.toml`` was excluded by default should stop relying on that behavior or add ``exclude pyproject.toml`` to their MANIFEST.in file.

Changes
^^^^^^^
* #1927: Setuptools once again declares 'setuptools' in the ``build-system.requires`` and adds PEP 517 build support by declaring itself as the ``build-backend``. It additionally specifies ``build-system.backend-path`` to rely on itself for those builders that support it.


v42.0.2
-------

Changes
^^^^^^^

* #1921: Fix support for easy_install's ``find-links`` option in ``setup.cfg``.
* #1922: Build dependencies (setup_requires and tests_require) now install transitive dependencies indicated by extras.


v42.0.1
-------



Changes
^^^^^^^
* #1918: Fix regression in handling wheels compatibility tags.


v42.0.0
-------



Breaking Changes
^^^^^^^^^^^^^^^^
* #1830, #1909: Mark the easy_install script and setuptools command as deprecated, and use `pip <https://pip.pypa.io/en/stable/>`_ when available to fetch/build wheels for missing ``setup_requires``/``tests_require`` requirements, with the following differences in behavior:
   * support for ``python_requires``
   * better support for wheels (proper handling of priority with respect to PEP 425 tags)
   * PEP 517/518 support
   * eggs are not supported
   * no support for the ``allow_hosts`` easy_install option (``index_url``/``find_links`` are still honored)
   * pip environment variables are honored (and take precedence over easy_install options)
* #1898: Removed the "upload" and "register" commands in favor of `twine <https://pypi.org/p/twine>`_.

Changes
^^^^^^^
* #1767: Add support for the ``license_files`` option in ``setup.cfg`` to automatically
  include multiple license files in a source distribution.
* #1829: Update handling of wheels compatibility tags:
  * add support for manylinux2010
  * fix use of removed 'm' ABI flag in Python 3.8 on Windows
* #1861: Fix empty namespace package installation from wheel.
* #1877: Setuptools now exposes a new entry point hook "setuptools.finalize_distribution_options", enabling plugins like `setuptools_scm <https://pypi.org/project/setuptools_scm>`_ to configure options on the distribution at finalization time.


v41.6.0
-------



Changes
^^^^^^^
* #479: Replace usage of deprecated ``imp`` module with local re-implementation in ``setuptools._imp``.


v41.5.1
-------



Changes
^^^^^^^
* #1891: Fix code for detecting Visual Studio's version on Windows under Python 2.


v41.5.0
-------



Changes
^^^^^^^
* #1811: Improve Visual C++ 14.X support, mainly for Visual Studio 2017 and 2019.
* #1814: Fix ``pkg_resources.Requirement`` hash/equality implementation: take PEP 508 direct URL into account.
* #1824: Fix tests when running under ``python3.10``.
* #1878: Formally deprecated the ``test`` command, with the recommendation that users migrate to ``tox``.

Documentation changes
^^^^^^^^^^^^^^^^^^^^^
* #1860: Update documentation to mention the egg format is not supported by pip and dependency links support was dropped starting with pip 19.0.
* #1862: Drop ez_setup documentation: deprecated for some time (last updated in 2016), and still relying on easy_install (deprecated too).
* #1868: Drop most documentation references to (deprecated) EasyInstall.
* #1884: Added a trove classifier to document support for Python 3.8.

Misc
^^^^
* #1886: Added Python 3.8 release to the Travis test matrix.


v41.4.0
-------



Changes
^^^^^^^
* #1847: In declarative config, now traps errors when invalid ``python_requires`` values are supplied.


v41.3.0
-------



Changes
^^^^^^^
* #1690: When storing extras, rely on OrderedSet to retain order of extras as indicated by the packager, which will also be deterministic on Python 2.7 (with PYTHONHASHSEED unset) and Python 3.6+.

Misc
^^^^
* #1858: Fixed failing integration test triggered by 'long_description_content_type' in packaging.


v41.2.0
-------



Changes
^^^^^^^
* #479: Remove some usage of the deprecated ``imp`` module.

Misc
^^^^
* #1565: Changed html_sidebars from string to list of string as per
  https://www.sphinx-doc.org/en/master/changes.html#id58


v41.1.0
-------



Misc
^^^^
* #1697: Moved most of the constants from setup.py to setup.cfg
* #1749: Fixed issue with the PEP 517 backend where building a source distribution would fail if any tarball existed in the destination directory.
* #1750: Fixed an issue with PEP 517 backend where wheel builds would fail if the destination directory did not already exist.
* #1756: Force metadata-version >= 1.2. when project urls are present.
* #1769: Improve ``package_data`` check: ensure the dictionary values are lists/tuples of strings.
* #1788: Changed compatibility fallback logic for ``html.unescape`` to avoid accessing ``HTMLParser.unescape`` when not necessary. ``HTMLParser.unescape`` is deprecated and will be removed in Python 3.9.
* #1790: Added the file path to the error message when a ``UnicodeDecodeError`` occurs while reading a metadata file.

