Bumps [pip](https://github.com/pypa/pip) from 25.2 to 25.3. <details> <summary>Changelog</summary> <p><em>Sourced from <a href="https://github.com/pypa/pip/blob/main/NEWS.rst">pip's changelog</a>.</em></p> <blockquote> <h1>25.3 (2025-10-24)</h1> <h2>Deprecations and Removals</h2> <ul> <li> <p>Remove support for the legacy <code>setup.py develop</code> editable method in setuptools editable installs; setuptools >= 64 is now required. (<code>[#11457](pypa/pip#11457) <https://github.com/pypa/pip/issues/11457></code>_)</p> </li> <li> <p>Remove the deprecated <code>--global-option</code> and <code>--build-option</code>. <code>--config-setting</code> is now the only way to pass options to the build backend. (<code>[#11859](pypa/pip#11859) <https://github.com/pypa/pip/issues/11859></code>_)</p> </li> <li> <p>Deprecate the <code>PIP_CONSTRAINT</code> environment variable for specifying build constraints.</p> <p>Use the <code>--build-constraint</code> option or the <code>PIP_BUILD_CONSTRAINT</code> environment variable instead. When build constraints are used, <code>PIP_CONSTRAINT</code> no longer affects isolated build environments. To enable this behavior without specifying any build constraints, use <code>--use-feature=build-constraint</code>. (<code>[#13534](pypa/pip#13534) <https://github.com/pypa/pip/issues/13534></code>_)</p> </li> <li> <p>Remove support for non-standard legacy wheel filenames. (<code>[#13581](pypa/pip#13581) <https://github.com/pypa/pip/issues/13581></code>_)</p> </li> <li> <p>Remove support for the deprecated <code>setup.py bdist_wheel</code> mechanism. Consequently, <code>--use-pep517</code> is now always on, and <code>--no-use-pep517</code> has been removed. (<code>[#6334](pypa/pip#6334) <https://github.com/pypa/pip/issues/6334></code>_)</p> </li> </ul> <h2>Features</h2> <ul> <li>When :pep:<code>658</code> metadata is available, full distribution files are no longer downloaded when using <code>pip lock</code> or <code>pip install --dry-run</code>. (<code>[#12603](pypa/pip#12603) <https://github.com/pypa/pip/issues/12603></code>_)</li> <li>Add support for installing an editable requirement written as a Direct URL (<code>PackageName @ URL</code>). (<code>[#13495](pypa/pip#13495) <https://github.com/pypa/pip/issues/13495></code>_)</li> <li>Add support for build constraints via the <code>--build-constraint</code> option. This allows constraining the versions of packages used during the build process (e.g., setuptools) without affecting the final installation. (<code>[#13534](pypa/pip#13534) <https://github.com/pypa/pip/issues/13534></code>_)</li> <li>On <code>ResolutionImpossible</code> errors, include a note about causes with no candidates. (<code>[#13588](pypa/pip#13588) <https://github.com/pypa/pip/issues/13588></code>_)</li> <li>Building pip itself from source now uses flit-core instead of setuptools. This does not affect how pip installs or builds packages you use. (<code>[#13473](pypa/pip#13473) <https://github.com/pypa/pip/issues/13473></code>_)</li> </ul> <h2>Bug Fixes</h2> <ul> <li>Handle malformed <code>Version</code> metadata entries and show a sensible error message instead of crashing. (<code>[#13443](pypa/pip#13443) <https://github.com/pypa/pip/issues/13443></code>_)</li> <li>Permit spaces between a filepath and extras in an install requirement. (<code>[#13523](pypa/pip#13523) <https://github.com/pypa/pip/issues/13523></code>_)</li> <li>Ensure the self-check files in the cache have the same permissions as the rest of the cache. (<code>[#13528](pypa/pip#13528) <https://github.com/pypa/pip/issues/13528></code>_)</li> <li>Avoid concurrency issues and improve performance when caching locally built wheels, especially when the temporary build directory is on a different filesystem than the cache. The wheel directory passed to the build backend is now a temporary subdirectory inside the cache directory. (<code>[#13540](pypa/pip#13540) <https://github.com/pypa/pip/issues/13540></code>_)</li> <li>Include relevant user-supplied constraints in logs when reporting dependency conflicts. (<code>[#13545](pypa/pip#13545) <https://github.com/pypa/pip/issues/13545></code>_)</li> <li>Fix a regression in configuration parsing that was turning a single value into a list and thus leading to a validation error. (<code>[#13548](pypa/pip#13548) <https://github.com/pypa/pip/issues/13548></code>_)</li> <li>For Python versions that do not support :pep:<code>706</code>, pip will now raise an installation error for a source distribution when it includes a symlink that points outside the source distribution archive. (<code>[#13550](pypa/pip#13550) <https://github.com/pypa/pip/issues/13550></code>_)</li> <li>Prevent <code>--user</code> installs if <code>site.ENABLE_USER_SITE</code> is set to <code>False</code>. (<code>[#8794](pypa/pip#8794) <https://github.com/pypa/pip/issues/8794></code>_)</li> </ul>  </blockquote> <p>... (truncated)</p> </details> <details> <summary>Commits</summary> <ul> <li><a href="https://github.com/pypa/pip/commit/a52069365063ea813fe3a3f8bac90397c9426d35"><code>a520693</code></a> Bump for release</li> <li><a href="https://github.com/pypa/pip/commit/0f2973eded07de7fcfe90d494763821172bc2c5f"><code>0f2973e</code></a> Fix up authors by adding entry to <code>.mailmap</code></li> <li><a href="https://github.com/pypa/pip/commit/87828dc11b18b657d95fed4dc4ed996ba032e4f8"><code>87828dc</code></a> Update AUTHORS.txt</li> <li><a href="https://github.com/pypa/pip/commit/ce6a38ce06886f1f711226600a5b002df1b70453"><code>ce6a38c</code></a> Merge pull request <a href="https://redirect.github.com/pypa/pip/issues/13628">#13628</a> from sbidoul/imp-doc-pep517-sbi</li> <li><a href="https://github.com/pypa/pip/commit/ee16c815eb52190a3ffa6d9e19e7dac78a0a0c3e"><code>ee16c81</code></a> Merge pull request <a href="https://redirect.github.com/pypa/pip/issues/13629">#13629</a> from notatallshaw/bump-gone_in="25.3"</li> <li><a href="https://github.com/pypa/pip/commit/3e227aafbfe5c464ce9f2fb72c446e29692ea6c2"><code>3e227aa</code></a> Bump gone_in="25.3"</li> <li><a href="https://github.com/pypa/pip/commit/4ad18287837da0bc52feb8dce03f604809395e3b"><code>4ad1828</code></a> Merge pull request <a href="https://redirect.github.com/pypa/pip/issues/13495">#13495</a> from ichard26/feat/direct-editables</li> <li><a href="https://github.com/pypa/pip/commit/66ded3b043ae3e25d761ee092c1add0d98c9e4bf"><code>66ded3b</code></a> Merge pull request <a href="https://redirect.github.com/pypa/pip/issues/13570">#13570</a> from ShubhamNagure/fix-constraint-reporting-13545</li> <li><a href="https://github.com/pypa/pip/commit/67e8ac2fc9002bfec8d371ecbe1a8813c64b68e9"><code>67e8ac2</code></a> Merge pull request <a href="https://redirect.github.com/pypa/pip/issues/13588">#13588</a> from notatallshaw/hint-on-resolution-impossible-whe...</li> <li><a href="https://github.com/pypa/pip/commit/990ca8a45149ea8980bd82699471fbabeeeec18c"><code>990ca8a</code></a> Merge pull request <a href="https://redirect.github.com/pypa/pip/issues/8796">#8796</a> from pelson/honour_user_site</li> <li>Additional commits viewable in <a href="https://github.com/pypa/pip/compare/25.2...25.3">compare view</a></li> </ul> </details> <br /> [![Dependabot compatibility score](https://dependabot-badges.githubapp.com/badges/compatibility_score?dependency-name=pip&package-manager=pip&previous-version=25.2&new-version=25.3)](https://docs.github.com/en/github/managing-security-vulnerabilities/about-dependabot-security-updates#about-compatibility-scores) Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. 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