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Changelog

unreleased

  • Do specifier matching correctly when the specifier contains an epoch number and has more components than the version (:issue:`683`)
  • BREAKING: Make optional metadata.Metadata attributes default to None (:issue:`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 (:issue:`733`)
  • Fix a bug preventing the use of the built in ExceptionGroup on versions of Python that support it (:issue:`725`)

23.2 - 2023-10-01

  • Document calendar-based versioning scheme (:issue:`716`)
  • Enforce that the entire marker string is parsed (:issue:`687`)
  • Requirement parsing no longer automatically validates the URL (:issue:`120`)
  • Canonicalize names for requirements comparison (:issue:`644`)
  • Introduce metadata.Metadata (along with metadata.ExceptionGroup and metadata.InvalidMetadata; :issue:`570`)
  • Introduce the validate keyword parameter to utils.normalize_name() (:issue:`570`)
  • Introduce utils.is_normalized_name() (:issue:`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

23.1 - 2023-04-12

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

23.0 - 2023-01-08

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

22.0 - 2022-12-07

  • Explicitly declare support for Python 3.11 (:issue:`587`)
  • Remove support for Python 3.6 (:issue:`500`)
  • Remove LegacySpecifier and LegacyVersion (:issue:`407`)
  • Add __hash__ and __eq__ to Requirement (:issue:`499`)
  • Add a cpNNN-none-any tag (:issue:`541`)
  • Adhere to PEP 685 when evaluating markers with extras (:issue:`545`)
  • Allow accepting locally installed prereleases with SpecifierSet (:issue:`515`)
  • Allow pre-release versions in marker evaluation (:issue:`523`)
  • Correctly parse ELF for musllinux on Big Endian (:issue:`538`)
  • Document packaging.utils.NormalizedName (:issue:`565`)
  • Document exceptions raised by functions in packaging.utils (:issue:`544`)
  • Fix compatible version specifier incorrectly strip trailing 0 (:issue:`493`)
  • Fix macOS platform tags with old macOS SDK (:issue:`513`)
  • Forbid prefix version matching on pre-release/post-release segments (:issue:`563`)
  • Normalize specifier version for prefix matching (:issue:`561`)
  • Improve documentation for packaging.specifiers and packaging.version. (:issue:`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 (:issue:`550`)
  • Remove dependency on pyparsing, by replacing it with a hand-written parser. This package now has no runtime dependencies (:issue:`468`)
  • Update return type hint for Specifier.filter and SpecifierSet.filter to use Iterator instead of Iterable (:issue:`584`)

21.3 - 2021-11-17

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

20.9 - 2021-01-29

20.8 - 2020-12-11

  • Revert back to setuptools for compatibility purposes for some Linux distros (:issue:`363`)
  • Do not insert an underscore in wheel tags when the interpreter version number is more than 2 digits (:issue:`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 (:issue:`357`)
  • Make intel a recognized CPU architecture for the universal macOS platform tag (:issue:`361`)
  • Add some missing type hints to packaging.requirements (issue:350)

20.5 - 2020-11-27

  • Officially support Python 3.9 (:issue:`343`)
  • Deprecate the LegacyVersion and LegacySpecifier classes (:issue:`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. (:issue:`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. (:issue:`257`)

20.0 - 2020-01-06

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

19.2 - 2019-09-18

19.1 - 2019-07-30

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. (:issue:`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 (:issue:`91`).
  • Add epoch, release, pre, dev, and post attributes to Version and LegacyVersion (:issue:`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 (:issue:`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. (:issue:`41`).
  • Implement environment markers from PEP 508.

15.3 - 2015-08-01

  • Normalize post-release spellings for rev/r prefixes. :issue:`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.