Bump pip from 25.0.1 to 25.1.1

[dependabot[bot]]

Bumps pip from 25.0.1 to 25.1.1.

Changelog

Sourced from pip's changelog.

25.1.1 (2025-05-02)

Bug Fixes

• Fix req.source_dir AssertionError when using the legacy resolver. ([#13353](https://github.com/pypa/pip/issues/13353) <https://github.com/pypa/pip/issues/13353>_)
• Fix crash on Python 3.9.6 and lower when pip failed to compile a Python module during installation. ([#13364](https://github.com/pypa/pip/issues/13364) <https://github.com/pypa/pip/issues/13364>_)
• Names in dependency group includes are now normalized before lookup, which fixes incorrect Dependency group '...' not found errors. ([#13372](https://github.com/pypa/pip/issues/13372) <https://github.com/pypa/pip/issues/13372>_)

Vendored Libraries

• Fix issues with using tomllib from the stdlib if available, rather than tomli
• Upgrade dependency-groups to 1.3.1

25.1 (2025-04-26)

Deprecations and Removals

• Drop support for Python 3.8. ([#12989](https://github.com/pypa/pip/issues/12989) <https://github.com/pypa/pip/issues/12989>_)
• On python 3.14+, the pkg_resources metadata backend cannot be used anymore. ([#13010](https://github.com/pypa/pip/issues/13010) <https://github.com/pypa/pip/issues/13010>_)
• Hide --no-python-version-warning from CLI help and documentation as it's useless since Python 2 support was removed. Despite being formerly slated for removal, the flag will remain as a no-op to avoid breakage. ([#13303](https://github.com/pypa/pip/issues/13303) <https://github.com/pypa/pip/issues/13303>_)
• A warning is emitted when the deprecated pkg_resources library is used to inspect and discover installed packages. This warning should only be visible to users who set an undocumented environment variable to disable the default importlib.metadata backend. ([#13318](https://github.com/pypa/pip/issues/13318) <https://github.com/pypa/pip/issues/13318>_)
• Deprecate the legacy setup.py bdist_wheel mechanism. To silence the warning, and future-proof their setup, users should enable --use-pep517 or add a pyproject.toml file to the projects they control. ([#13319](https://github.com/pypa/pip/issues/13319) <https://github.com/pypa/pip/issues/13319>_)

Features

• Suggest checking "pip config debug" in case of an InvalidProxyURL error. ([#12649](https://github.com/pypa/pip/issues/12649) <https://github.com/pypa/pip/issues/12649>_)
• Using --debug also enables verbose logging. ([#12710](https://github.com/pypa/pip/issues/12710) <https://github.com/pypa/pip/issues/12710>_)
• Display a transient progress bar during package installation. ([#12712](https://github.com/pypa/pip/issues/12712) <https://github.com/pypa/pip/issues/12712>_)
• Minor performance improvement when installing packages with a large number of dependencies by increasing the requirement string cache size. ([#12873](https://github.com/pypa/pip/issues/12873) <https://github.com/pypa/pip/issues/12873>_)
• Add a --group option which allows installation from :pep:735 Dependency Groups. --group accepts arguments of the form group or path:group, where the default path is pyproject.toml, and installs

... (truncated)

Commits

• 01857ef Bump for release
• 08d8bb9 Merge pull request #13374 from pfmoore/fixups
• 2bff84e Merge pull request #13363 from sbidoul/fix-source_dir-assert
• 644e71d News file fixups
• 426856f Merge pull request #13364 from ichard26/bugfix/python39
• b7e3aea Merge pull request #13356 from eli-schwartz/tomllib
• 8c678fe Merge pull request #13373 from sirosen/update-vendored-dependency-groups
• 7d00639 Update newsfiles for dependency-groups patch
• 6d28bbf Update version of dependency-groups to v1.3.1
• 94bd66d Revert StreamWrapper removal to restore Python 3.9.{0,6} compat
• Additional commits viewable in compare view

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