pypa/packaging 26.0rc1 on GitHub

What's Changed

Features:

PEP 751: support pylock by @sbidoul in #900
PEP 794: import name metadata by @brettcannon in #948
Support writing metadata by @henryiii in #846
Support __replace__ for Version by @henryiii in #1003
Support positional pattern matching for Version and Specifier by @henryiii in #1004

Behavior adaptations:

PEP 440 handling of prereleases for Specifier.contains, SpecifierSet.contains, and SpecifierSet.filter by @notatallshaw in #897
Handle PEP 440 edge case in SpecifierSet.filter by @notatallshaw in #942
Adjust arbitrary equality intersection preservation in SpecifierSet by @notatallshaw in #951
Return False instead of raising for .contains with invalid version by @Liam-DeVoe in #932
Support arbitrary equality on arbitrary strings for Specifier and SpecifierSet's filter and contains method. by @notatallshaw in #954
Only try to parse as Version on certain marker keys, return False on unequal ordered comparsions by @JP-Ellis in #939

Fixes:

Update _hash when unpickling Tag() by @dholth in #860
Correct comment and simplify implicit prerelease handling in Specifier.prereleases by @notatallshaw in #896
Use explicit _GLibCVersion NamedTuple in _manylinux by @cthoyt in #868
Detect invalid license expressions containing () by @bwoodsend in #879
Correct regex for metadata 'name' format by @di in #925
Improve the message around expecting a semicolon by @pradyunsg in #833
Support nested parens in license expressions by @Liam-DeVoe in #931
Add space before at symbol in Requirements string by @henryiii in #953
A root logger use found by ruff LOG, use packaging logger instead by @henryiii in #965
Better support for subclassing Marker and Requirement by @henryiii in #1022
Normalize all extras, not just if it comes first by @henryiii in #1024
Don't produce a broken repr if Marker fails to construct by @henryiii in #1033

Performance:

Avoid recompiling regexes in the tokenizer for a 3x speedup by @hauntsaninja in #1019
Improve performance in _manylinux.py by @cthoyt in #869
Minor cleanups to Version by @bearomorphism in #913
Skip redundant creation of Versions in specifier comparison by @notatallshaw in #986
Cache Specifier's Version by @notatallshaw in #985
Make Version a little faster by @henryiii in #987
Minor Version regex cleanup by @henryiii in #990
Faster regex on Python 3.11+ by @henryiii in #988
Lazily calculate _key in Version by @notatallshaw in #989
Faster canonicalize_version by @henryiii in #993
Use fullmatch in a couple more places by @henryiii in #992
Use fullmatch for markers too by @henryiii in #1029
Use map instead of generator by @henryiii in #996
Drop ._version (_Version, a NamedTuple) by @henryiii in #995
Avoid duplicate Version creation in canonicalize_version by @henryiii in #994
Add __slots__ to Version by @henryiii in #1001
Add __slots__ to Specifiers by @henryiii in #1002
Add __slots__ to Nodes by @henryiii in #1032
Use version.__replace__ in specifier comparison by @notatallshaw in #999
Use _get_spec_version in more places in Specifier by @notatallshaw in #1005
Pull set construction out of function by @henryiii in #1012
Letter normalization dict for prereleases and the like by @henryiii in #1014
Avoid normalizing extras again when comparing by @henryiii in #1028
Speed up Version.__str__ by about 10% by @henryiii in #997
Double the performance of canonicalize_name by avoiding a regex by @henryiii in #1030

Type annotations:

Fix a type annotation by @brettcannon in #907
Fix tags return type in parse_wheel_filename docs by @ncoghlan in #973
Add type hint for _version in .version.Version by @brettcannon in #927
Changed static type annotations in prereleases setter method in specifier.py by @subhajitsaha01 in #930
Statically type the tests by @henryiii in #982

Internal:

Test and declare support Python 3.14 by @henryiii in #901
Modernize and speed up tests on Python 3.14 by @henryiii in #903
Change our license metadata to use an SPDX license expression by @cdce8p in #881
No need for license-files by @DimitriPapadopoulos in #924
Update mypy by @hauntsaninja in #891
Some config updates by @henryiii in #902
Add spell check and rst check by @henryiii in #904
Clean up ruff ignores by @henryiii in #905
Update example for env marker python_version by @trim21 in #908
Move codespell configuration into pyproject.toml by @yarikoptic in #910
Check warning a little more precisely by @henryiii in #837
Speed up mypy a little by @henryiii in #836
Apply ruff/flake8-pyi rules (PYI) by @DimitriPapadopoulos in #835
Better local runs for codespell by @henryiii in #911
Remove outdated/confusing Gist link by @stefan6419846 in #921
Fix docs and docs ci after #897 landed by @notatallshaw in #926
Run twine-check on push in CI by @EpicWink in #922
ruff was renamed ruff-check in pre-commit by @henryiii in #933
Fix incorrectly implicitly concatenated string in specifiers test by @notatallshaw in #946
Simplify conditional by @ofek in #949
Modernize nox, use dependency-groups for tests by @henryiii in #952
Add more checks that don't affect anything by @henryiii in #957
Enable Ruff ISC rule by @henryiii in #959
Ruff code FLY by @henryiii in #963
pytest log_level is better than log_cli_level by @henryiii in #956
Ruff code TRY by @henryiii in #961
Add the ruff PL checks by @henryiii in #964
Enable Ruff ARG rules by @henryiii in #958
Ruff PT code (pytest) by @henryiii in #960
Add ruff DTZ by @henryiii in #968
Add ruff BLE by @henryiii in #967
Add the ruff SIM checks by @henryiii in #966
Adding ruff PERF by @henryiii in #969
Move some config into coverage config by @henryiii in #971
Check ruff C4 by @henryiii in #962
Adding ruff T20 by @henryiii in #972
Add a tests pass job by @henryiii in #977
Add ruff TC by @henryiii in #980
Adding part of ruff RET by @henryiii in #979
Reorder mypy check by @henryiii in #983
Enable ruff ALL by @henryiii in #984
Link back to repo/source in furo by @henryiii in #991
Add case insensitivity tests for arbitrary equality by @notatallshaw in #975
Synchronize documentation and code for markers by @zahlman in #1008
Use partition in _parse_project_urls by @henryiii in #1013
auto-skip the dependabot PRs in the release changelog generation by @henryiii in #1016
Update unreleased section in changelog by @henryiii in #1017
Fix PR role to match extlinks by @hugovk in #1020
Mention new parts in README by @henryiii in #1023
Replace a couple of asserts with else by @henryiii in #1027
Simplify and/or check a little more by @henryiii in #1031
Use slim runner for all check by @henryiii in #1021
Use typos instead of codespell by @henryiii in #1015
Update changelog with recent additions by @henryiii in #1034
Publish to PyPI via GitHub CI by @EpicWink in #893
Use prek for faster pre-commit lint step by @henryiii in #1037
Add help text to noxfile by @henryiii in #1038
Update licenses to 3.27 by @henryiii in #1036
Use relative import in packaging.licenses by @notatallshaw in #1039
Add zizmor and tighten up CI by @henryiii in #1035
Fix release script by @henryiii in #1040
Fix using a dev version (again) by @henryiii in #1041

New Contributors

@cdce8p made their first contribution in #881
@dholth made their first contribution in #860
@trim21 made their first contribution in #908
@yarikoptic made their first contribution in #910
@cthoyt made their first contribution in #868
@bwoodsend made their first contribution in #879
@stefan6419846 made their first contribution in #921
@bearomorphism made their first contribution in #913
@EpicWink made their first contribution in #922
@Liam-DeVoe made their first contribution in #932
@subhajitsaha01 made their first contribution in #930
@ncoghlan made their first contribution in #973
@zahlman made their first contribution in #1008
@JP-Ellis made their first contribution in #939

Full Changelog: 25.0...26.0rc1