Changelog¶

25.0 - 2025-04-19¶

PEP 751: Add support for extras and dependency_groups markers. (#885)
PEP 738: Add support for Android platform tags. (#880)

24.2 - 2024-11-08¶

PEP 639: Implement License-Expression and License-File (#828)
Use !r formatter for error messages with filenames (#844)
Add support for PEP 730 iOS tags (#832)
Fix prerelease detection for > and < (#794)
Fix uninformative error message (#830)
Refactor canonicalize_version (#793)
Patch python_full_version unconditionally (#825)
Fix doc for canonicalize_version to mention strip_trailing_zero and a typo in a docstring (#801)
Fix typo in Version __str__ (#817)
Support creating a SpecifierSet from an iterable of Specifier objects (#775)

24.1 - 2024-06-10¶

Document markers.default_environment() (#753).
Add support for Python 3.13 (#783).
Modernise type annotations (#785).
Work around platform.python_version() returning non PEP 440 compliant version for non-tagged CPython builds (#802).

24.0 - 2024-03-10¶

Do specifier matching correctly when the specifier contains an epoch number and has more components than the version (#683)
Support the experimental --disable-gil builds in packaging.tags (#727)
BREAKING: Make optional metadata.Metadata attributes default to None (#733)
Fix errors when trying to access the description_content_type, keywords, and requires_python attributes on metadata.Metadata when those values have not been provided (#733)
Fix a bug preventing the use of the built in ExceptionGroup on versions of Python that support it (#725)

23.2 - 2023-10-01¶

Document calendar-based versioning scheme (#716)
Enforce that the entire marker string is parsed (#687)
Requirement parsing no longer automatically validates the URL (#120)
Canonicalize names for requirements comparison (#644)
Introduce metadata.Metadata (along with metadata.ExceptionGroup and metadata.InvalidMetadata; #570)
Introduce the validate keyword parameter to utils.normalize_name() (#570)
Introduce utils.is_normalized_name() (#570)
Make utils.parse_sdist_filename() and utils.parse_wheel_filename() raise InvalidSdistFilename and InvalidWheelFilename, respectively, when the version component of the name is invalid
Remove support for Python 3.7 (#783)

23.1 - 2023-04-12¶

Parse raw metadata (#671)
Import underlying parser functions as an underscored variable (#663)
Improve error for local version label with unsupported operators (#675)
Add dedicated error for specifiers with incorrect .* suffix
Replace spaces in platform names with underscores (#620)
Relax typing of _key on _BaseVersion (#669)
Handle prefix match with zeros at end of prefix correctly (#674)

23.0 - 2023-01-08¶

Allow "extra" to be None in the marker environment (#650)
Refactor tags._generic_api to use EXT_SUFFIX (#607)
Correctly handle trailing whitespace on URL requirements (#642)
Fix typing for specifiers.BaseSpecifier.filter() (#643)
Use stable Python 3.11 in tests (#641)
Correctly handle non-normalised specifiers in requirements (#634)
Move to src/ layout (#626)
Remove __about__ file, in favour of keeping constants in __init__ (#626)

22.0 - 2022-12-07¶

Explicitly declare support for Python 3.11 (#587)
Remove support for Python 3.6 (#500)
Remove LegacySpecifier and LegacyVersion (#407)
Add __hash__ and __eq__ to Requirement (#499)
Add a cpNNN-none-any tag (#541)
Adhere to PEP 685 when evaluating markers with extras (#545)
Allow accepting locally installed prereleases with SpecifierSet (#515)
Allow pre-release versions in marker evaluation (#523)
Correctly parse ELF for musllinux on Big Endian (#538)
Document packaging.utils.NormalizedName (#565)
Document exceptions raised by functions in packaging.utils (#544)
Fix compatible version specifier incorrectly strip trailing 0 (#493)
Fix macOS platform tags with old macOS SDK (#513)
Forbid prefix version matching on pre-release/post-release segments (#563)
Normalize specifier version for prefix matching (#561)
Improve documentation for packaging.specifiers and packaging.version. (#572)
Marker.evaluate will now assume evaluation environment with empty extra. Evaluating markers like "extra == 'xyz'" without passing any extra in the environment will no longer raise an exception (#550)
Remove dependency on pyparsing, by replacing it with a hand-written parser. This package now has no runtime dependencies (#468)
Update return type hint for Specifier.filter and SpecifierSet.filter to use Iterator instead of Iterable (#584)

21.3 - 2021-11-17¶

Add a pp3-none-any tag (#311)
Replace the blank pyparsing 3 exclusion with a 3.0.5 exclusion (#481, #486)
Fix a spelling mistake (#479)

21.2 - 2021-10-29¶

Update documentation entry for 21.1.

21.1 - 2021-10-29¶

Update pin to pyparsing to exclude 3.0.0.

21.0 - 2021-07-03¶

PEP 656: musllinux support (#411)
Drop support for Python 2.7, Python 3.4 and Python 3.5.
Replace distutils usage with sysconfig (#396)
Add support for zip files in parse_sdist_filename (#429)
Use cached _hash attribute to short-circuit tag equality comparisons (#417)
Specify the default value for the specifier argument to SpecifierSet (#437)
Proper keyword-only “warn” argument in packaging.tags (#403)
Correctly remove prerelease suffixes from ~= check (#366)
Fix type hints for Version.post and Version.dev (#393)
Use typing alias UnparsedVersion (#398)
Improve type inference for packaging.specifiers.filter() (#430)
Tighten the return type of canonicalize_version() (#402)

20.9 - 2021-01-29¶

Run isort over the code base (#377)
Add support for the macosx_10_*_universal2 platform tags (#379)
Introduce packaging.utils.parse_wheel_filename() and parse_sdist_filename() (#387 and #389)

20.8 - 2020-12-11¶

Revert back to setuptools for compatibility purposes for some Linux distros (#363)
Do not insert an underscore in wheel tags when the interpreter version number is more than 2 digits (#372)

20.7 - 2020-11-28¶

No unreleased changes.

20.6 - 2020-11-28¶

Note

This release was subsequently yanked, and these changes were included in 20.7.

Fix flit configuration, to include LICENSE files (#357)
Make intel a recognized CPU architecture for the universal macOS platform tag (#361)
Add some missing type hints to packaging.requirements (issue:350)

20.5 - 2020-11-27¶

Officially support Python 3.9 (#343)
Deprecate the LegacyVersion and LegacySpecifier classes (#321)
Handle OSError on non-dynamic executables when attempting to resolve the glibc version string.

20.4 - 2020-05-19¶

Canonicalize version before comparing specifiers. (#282)
Change type hint for canonicalize_name to return packaging.utils.NormalizedName. This enables the use of static typing tools (like mypy) to detect mixing of normalized and un-normalized names.

20.3 - 2020-03-05¶

Fix changelog for 20.2.

20.2 - 2020-03-05¶

Fix a bug that caused a 32-bit OS that runs on a 64-bit ARM CPU (e.g. ARM-v8, aarch64), to report the wrong bitness.

20.1 - 2020-01-24¶

Fix a bug caused by reuse of an exhausted iterator. (#257)

20.0 - 2020-01-06¶

Add type hints (#191)
Add proper trove classifiers for PyPy support (#198)
Scale back depending on ctypes for manylinux support detection (#171)
Use sys.implementation.name where appropriate for packaging.tags (#193)
Expand upon the API provided by packaging.tags: interpreter_name(), mac_platforms(), compatible_tags(), cpython_tags(), generic_tags() (#187)
Officially support Python 3.8 (#232)
Add major, minor, and micro aliases to packaging.version.Version (#225)
Properly mark packaging has being fully typed by adding a py.typed file (#226)

19.2 - 2019-09-18¶

Remove dependency on attrs (#178, #179)
Use appropriate fallbacks for CPython ABI tag (#181, #185)
Add manylinux2014 support (#186)
Improve ABI detection (#181)
Properly handle debug wheels for Python 3.8 (#172)
Improve detection of debug builds on Windows (#194)

19.1 - 2019-07-30¶

Add the packaging.tags module. (#156)
Correctly handle two-digit versions in python_version (#119)

19.0 - 2019-01-20¶

Fix string representation of PEP 508 direct URL requirements with markers.
Better handling of file URLs

This allows for using file:///absolute/path, which was previously prevented due to the missing netloc.

This allows for all file URLs that urlunparse turns back into the original URL to be valid.

18.0 - 2018-09-26¶

Improve error messages when invalid requirements are given. (#129)

17.1 - 2017-02-28¶

Fix utils.canonicalize_version when supplying non PEP 440 versions.

17.0 - 2017-02-28¶

Drop support for python 2.6, 3.2, and 3.3.
Define minimal pyparsing version to 2.0.2 (#91).
Add epoch, release, pre, dev, and post attributes to Version and LegacyVersion (#34).
Add Version().is_devrelease and LegacyVersion().is_devrelease to make it easy to determine if a release is a development release.
Add utils.canonicalize_version to canonicalize version strings or Version instances (#121).

16.8 - 2016-10-29¶

Fix markers that utilize in so that they render correctly.
Fix an erroneous test on Python RC releases.

16.7 - 2016-04-23¶

Add support for the deprecated python_implementation marker which was an undocumented setuptools marker in addition to the newer markers.

16.6 - 2016-03-29¶

Add support for the deprecated, PEP 345 environment markers in addition to the newer markers.

16.5 - 2016-02-26¶

Fix a regression in parsing requirements with whitespaces between the comma separators.

16.4 - 2016-02-22¶

Fix a regression in parsing requirements like foo (==4).

16.3 - 2016-02-21¶

Fix a bug where packaging.requirements:Requirement was overly strict when matching legacy requirements.

16.2 - 2016-02-09¶

Add a function that implements the name canonicalization from PEP 503.

16.1 - 2016-02-07¶

Implement requirement specifiers from PEP 508.

16.0 - 2016-01-19¶

Relicense so that packaging is available under either the Apache License, Version 2.0 or a 2 Clause BSD license.
Support installation of packaging when only distutils is available.
Fix == comparison when there is a prefix and a local version in play. (#41).
Implement environment markers from PEP 508.

15.3 - 2015-08-01¶

Normalize post-release spellings for rev/r prefixes. #35

15.2 - 2015-05-13¶

Fix an error where the arbitrary specifier (===) was not correctly allowing pre-releases when it was being used.
Expose the specifier and version parts through properties on the Specifier classes.
Allow iterating over the SpecifierSet to get access to all of the Specifier instances.
Allow testing if a version is contained within a specifier via the in operator.

15.1 - 2015-04-13¶

Fix a logic error that was causing inconsistent answers about whether or not a pre-release was contained within a SpecifierSet or not.

15.0 - 2015-01-02¶

Add Version().is_postrelease and LegacyVersion().is_postrelease to make it easy to determine if a release is a post release.
Add Version().base_version and LegacyVersion().base_version to make it easy to get the public version without any pre or post release markers.
Support the update to PEP 440 which removed the implied !=V.* when using either >V or <V and which instead special cased the handling of pre-releases, post-releases, and local versions when using >V or <V.

14.5 - 2014-12-17¶

Normalize release candidates as rc instead of c.
Expose the VERSION_PATTERN constant, a regular expression matching a valid version.

14.4 - 2014-12-15¶

Ensure that versions are normalized before comparison when used in a specifier with a less than (<) or greater than (>) operator.

14.3 - 2014-11-19¶

BACKWARDS INCOMPATIBLE Refactor specifier support so that it can sanely handle legacy specifiers as well as PEP 440 specifiers.
BACKWARDS INCOMPATIBLE Move the specifier support out of packaging.version into packaging.specifiers.

14.2 - 2014-09-10¶

Add prerelease support to Specifier.
Remove the ability to do item in Specifier() and replace it with Specifier().contains(item) in order to allow flags that signal if a prerelease should be accepted or not.
Add a method Specifier().filter() which will take an iterable and returns an iterable with items that do not match the specifier filtered out.

14.1 - 2014-09-08¶

Allow LegacyVersion and Version to be sorted together.
Add packaging.version.parse() to enable easily parsing a version string as either a Version or a LegacyVersion depending on it’s PEP 440 validity.

14.0 - 2014-09-05¶

Initial release.