Sourced from mypy's changelog.

Mypy Release Notes

Next Release

Mypy 1.16

We’ve just uploaded mypy 1.16 to the Python Package Index (PyPI). Mypy is a static type checker for Python. This release includes new features and bug fixes. You can install it as follows:

python3 -m pip install -U mypy

You can read the full documentation for this release on Read the Docs.

Different Property Getter and Setter Types

Mypy now supports using different types for a property getter and setter:

class A:
    _value: int
@property
def foo(self) -> int:
    return self._value
@foo.setter

def foo(self, x: str | int) -> None:

try:

self._value = int(x)

except ValueError:

raise Exception(f"'{x}' is not a valid value for 'foo'")

This was contributed by Ivan Levkivskyi (PR 18510).

Flexible Variable Redefinitions (Experimental)

Mypy now allows unannotated variables to be freely redefined with different types when using the experimental --allow-redefinition-new flag. You will also need to enable --local-partial-types. Mypy will now infer a union type when different types are assigned to a variable:

# mypy: allow-redefinition-new, local-partial-types
def f(n: int, b: bool) -> int | str:
if b:
x = n
else:
</tr></table>

... (truncated)

• 9e72e96 Update version to 1.16.0
• 8fe719f Add changelog for 1.16 (#19138)
• 2a036e7 Revert "Infer correct types with overloads of Type[Guard | Is] (#19161)
• b6da4fc Allow enum members to have type objects as values (#19160)
• 334469f [mypyc] Improve documentation of native and non-native classes (#19154)
• a499d9f Document --allow-redefinition-new (#19153)
• 96525a2 Merge commit '9e45dadcf6d8dbab36f83d9df94a706c0b4f9207' into release-1.16
• 9e45dad Clear more data in TypeChecker.reset() instead of asserting (#19087)
• 772cd0c Add --strict-bytes to --strict (#19049)
• 0b65f21 Admit that Final variables are never redefined (#19083)
• Additional commits viewable in compare view

Sourced from nox's releases.

2025.05.01 🌸

This is a bugfix release that primarily adds support for uv 0.7+. A few other small fixes were made.

We'd like to thank the following folks who contributed to this release:

• @​chirizxc
• @​gschaffner
• @​henryiii
• @​living180
• @​Spectre5 (first contribution)

Bugfixes:

• uv version is now uv self version, respect UV by @​henryiii and @​Spectre5 in wntrblm/nox#955
• Add UV_PYTHON to disallowed vars by @​henryiii in wntrblm/nox#959
• Never ignore URL dependencies in PEP 723 noxfiles by @​gschaffner in wntrblm/nox#935
• Support forcing Python on parametrized session by @​henryiii in wntrblm/nox#958
• Fix conda_install issue with newer conda (only Unix) by @​henryiii in wntrblm/nox#957
• Show skip reason by default by @​chirizxc in wntrblm/nox#941
• Support Path for envdir by @​henryiii in wntrblm/nox#932
• Use Python 3.12 for action, allow 3.13, drop 3.8 from auto versions by @​henryiii in wntrblm/nox#946

Documentation:

• Fix a typo in the changelog by @​gschaffner in wntrblm/nox#936
• Update uv recipe by @​henryiii in wntrblm/nox#933
• Fix parametrized session tagging example by @​living180 in wntrblm/nox#942
• uv now supports pip install . reinstallation by @​henryiii in wntrblm/nox#947

Internal changes:

• Use PEP 639 license info by @​henryiii in wntrblm/nox#956
• Make test skips a bit smarter by @​henryiii in wntrblm/nox#929
• Add our own requirements to conda too by @​henryiii in wntrblm/nox#945

Sourced from nox's changelog.

Changelog

2025.05.01

This is a bugfix release that primarily adds support for uv 0.7+. A few other small fixes were made.

We'd like to thank the following folks who contributed to this release:

• @​chirizxc
• @​gschaffner
• @​henryiii
• @​living180
• @​Spectre5 (first contribution)

Bugfixes:

• uv version is now uv self version, respect UV by @​henryiii and @​Spectre5 in wntrblm/nox#955
• Add UV_PYTHON to disallowed vars by @​henryiii in wntrblm/nox#959
• Never ignore URL dependencies in PEP 723 noxfiles by @​gschaffner in wntrblm/nox#935
• Support forcing Python on parametrized session by @​henryiii in wntrblm/nox#958
• Fix conda_install issue with newer conda (only Unix) by @​henryiii in wntrblm/nox#957
• Show skip reason by default by @​chirizxc in wntrblm/nox#941
• Support Path for envdir by @​henryiii in wntrblm/nox#932
• Use Python 3.12 for action, allow 3.13, drop 3.8 from auto versions by @​henryiii in wntrblm/nox#946

Documentation:

• Fix a typo in the changelog by @​gschaffner in wntrblm/nox#936
• Update uv recipe by @​henryiii in wntrblm/nox#933
• Fix parametrized session tagging example by @​living180 in wntrblm/nox#942
• uv now supports pip install . reinstallation by @​henryiii in wntrblm/nox#947

Internal changes:

• Use PEP 639 license info by @​henryiii in wntrblm/nox#956
• Make test skips a bit smarter by @​henryiii in wntrblm/nox#929
• Add our own requirements to conda too by @​henryiii in wntrblm/nox#945

2025.02.09

This release improves PEP 723 support, including adding dependencies to the noxfile itself ("plugins"). It adds the long-awaited "requires" option, allowing sessions to require other sessions. And it brings further improvements to the pyproject.toml support, including helpers for dependency-groups and Python version lists.

We'd like to thank the following folks who contributed to this release:

• @​btemplep (first contribution)
• @​chirizxc (first contribution)
• @​davidhewitt (first contribution)
• @​gschaffner (first contribution)

... (truncated)

• 2254a1e chore: bump version to 2025.05.01 (#960)
• e0b5e33 fix: conda_install issue with newer conda (#957)
• a58fe60 fix: support forcing Python on parametrized session (#958)
• aa475d6 fix: add UV_PYTHON to disallowed vars (#959)
• 1acbb4e chore: use PEP 639 license (#956)
• 7219be7 chore(deps): bump astral-sh/setup-uv from 5 to 6 in the actions group (#952)
• b943f95 fix: uv version is now uv self version, support UV (#955)
• 1d52c8f Never ignore URL dependencies in PEP 723 noxfiles (#935)
• 4e7f644 feat: show skip reason by default (#941)
• 70df6ab fix: use Python 3.12 for action, allow 3.13, drop 3.8 from auto versions (#946)
• Additional commits viewable in compare view

Sourced from pytest's releases.

8.4.0

pytest 8.4.0 (2025-06-02)

Removals and backward incompatible breaking changes

• #11372: Async tests will now fail, instead of warning+skipping, if you don't have any suitable plugin installed.

• #12346: Tests will now fail, instead of raising a warning, if they return any value other than None.

• #12874: We dropped support for Python 3.8 following its end of life (2024-10-07).

• #12960: Test functions containing a yield now cause an explicit error. They have not been run since pytest 4.0, and were previously marked as an expected failure and deprecation warning.

  See the docs <yield tests deprecated>{.interpreted-text role="ref"} for more information.

Deprecations (removal in next major release)

• #10839: Requesting an asynchronous fixture without a [pytest_fixture_setup]{.title-ref} hook that resolves it will now give a DeprecationWarning. This most commonly happens if a sync test requests an async fixture. This should have no effect on a majority of users with async tests or fixtures using async pytest plugins, but may affect non-standard hook setups or autouse=True. For guidance on how to work around this warning see sync-test-async-fixture{.interpreted-text role="ref"}.

New features

• #11538: Added pytest.RaisesGroup{.interpreted-text role="class"} as an equivalent to pytest.raises{.interpreted-text role="func"} for expecting ExceptionGroup{.interpreted-text role="exc"}. Also adds pytest.RaisesExc{.interpreted-text role="class"} which is now the logic behind pytest.raises{.interpreted-text role="func"} and used as parameter to pytest.RaisesGroup{.interpreted-text role="class"}. RaisesGroup includes the ability to specify multiple different expected exceptions, the structure of nested exception groups, and flags for emulating except* <except_star>{.interpreted-text role="ref"}. See assert-matching-exception-groups{.interpreted-text role="ref"} and docstrings for more information.

• #12081: Added capteesys{.interpreted-text role="fixture"} to capture AND pass output to next handler set by --capture=.

• #12504: pytest.mark.xfail{.interpreted-text role="func"} now accepts pytest.RaisesGroup{.interpreted-text role="class"} for the raises parameter when you expect an exception group. You can also pass a pytest.RaisesExc{.interpreted-text role="class"} if you e.g. want to make use of the check parameter.

• #12713: New [--force-short-summary]{.title-ref} option to force condensed summary output regardless of verbosity level.

  This lets users still see condensed summary output of failures for quick reference in log files from job outputs, being especially useful if non-condensed output is very verbose.

• #12749: pytest traditionally collects classes/functions in the test module namespace even if they are imported from another file.

  For example:

  # contents of src/domain.py
  class Testament: ...
  contents of tests/test_testament.py
  from domain import Testament
  def test_testament(): ...
  

  In this scenario with the default options, pytest will collect the class [Testament]{.title-ref} from [tests/test_testament.py]{.title-ref} because it starts with [Test]{.title-ref}, even though in this case it is a production class being imported in the test module namespace.

  This behavior can now be prevented by setting the new collect_imported_tests{.interpreted-text role="confval"} configuration option to false, which will make pytest collect classes/functions from test files only if they are defined in that file.

... (truncated)

• 315b3ae Prepare release version 8.4.0
• 1498ba3 Merge pull request #13467 from pytest-dev/towncrier-create
• e4389ac Remove resultlog from the docs (#13465)
• 64b2301 scripts/release: add missing build to towncrier call
• 4c205cf testing/plugins_integration: update Django (#13463)
• 4dcbcc9 Merge pull request #13458 from pytest-dev/dup-param-error
• 5293016 Merge pull request #13459 from pytest-dev/pyright-minor-fixes
• 7a48181 Add pyright configuration
• 9fc6db9 pytester: avoid confusing x self parameter
• 9aa198b mark/expression: fix self -> cls
• Additional commits viewable in compare view

Sourced from setuptools's changelog.

v80.9.0

Features

• Set a deadline for the removal of pkg_resources later this year (December). (#3085)
• Removed reliance on pkg_resources in test_wheel. (#3085)

v80.8.0

Features

• Replaced more references to pkg_resources with importlib equivalents in wheel odule. (#3085)
• Restore explicit LICENSE file. (#5001)
• Removed no longer used build dependency on coherent.licensed. (#5003)

v80.7.1

Bugfixes

• Only attempt to fetch eggs for unsatisfied requirements. (#4998)
• In installer, when discovering egg dists, let metadata discovery search each egg. (#4998)

v80.7.0

Features

• Removed usage of pkg_resources from installer. Set an official deadline on the installer deprecation to 2025-10-31. (#4997)

Misc

• #4996

v80.6.0

Features

... (truncated)

• 9c4d383 Bump version: 80.8.0 → 80.9.0
• 05cb3c8 Merge pull request #5014 from pypa/debt/pkg_resources-deadline
• 3b0bf5b Adjust ignore
• 9c28cdf Set a deadline for the removal of pkg_resources later this year (December).
• a3bfef9 Merge pull request #5013 from DimitriPapadopoulos/ISC
• 64bf9d0 Enforce ruff/flake8-implicit-str-concat rules (ISC)
• 3250c25 Fix broken link in docs (#4947)
• 5ccf50e Merge pull request #5006 from pypa/feature/remove-more-pkg_resources
• 134e587 Suppress nitpicky typecheck in pyright.
• 0bf2663 Add news fragment.
• Additional commits viewable in compare view

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