v6.12.0

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• Bump @​docker/actions-toolkit from 0.49.0 to 0.51.0 in https://github.com/docker/build-push-action/pull/1300

Full Changelog: docker/build-push-action@v6.11.0...v6.12.0

v0.5.22

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Enhancements

• Include version and contact information in GitHub User Agent (#​10785)

Performance

• Add fast-path for recursive extras in dynamic validation (#​10823)
• Fetch pyproject.toml from GitHub API (#​10765)
• Remove allocation in Git SHA truncation (#​10801)
• Skip GitHub fast path when full commit is already known (#​10800)

Bug fixes

• Add fallback to build backend when Requires-Dist mismatches (#​10797)
• Avoid deserialization error for paths above the root (#​10789)
• Avoid respecting preferences from other indexes (#​10782)
• Disable the distutils setuptools shim during interpreter query (#​10819)
• Omit variant when detecting compatible Python installs (#​10722)
• Remove TOCTOU errors in Git clone (#​10758)
• Validate metadata under GitHub fast path (#​10796)
• Include conflict markers in fork markers (#​10818)

Error messages

• Add tag incompatibility hints to sync failures (#​10739)
• Improve log when distutils is missing (#​10713)
• Show non-critical Python discovery errors if no other interpreter is found (#​10716)
• Use colors for lock errors (#​10736)

Documentation

• Add testing instructions to the AWS Lambda guide (#​10805)

v0.5.21

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Enhancements

• Avoid building dynamic versions when validating lockfile (#​10703)

Configuration

• Add UV_VENV_SEED environment variable (#​10715)

Performance

• Store unsupported tags in wheel filename (#​10665)

Bug fixes

• Avoid attempting to patch macOS dylib for non-macOS installs (#​10721)
• Avoid narrowing requires-python marker with disjunctions (#​10704)
• Respect environment variable credentials for indexes outside root (#​10688)
• Respect preferences for explicit index dependencies from requirements.txt (#​10690)
• Sort preferences by environment, then index (#​10700)
• Ignore permission errors when looking for user-level configuration file (#​10697)

Documentation

• Add SyntaxWarning compatibility note to bytecode compilation docs (#​10701)
• Add MACOSX_DEPLOYMENT_TARGET to the --python-platform documentation (#​10698)

v0.5.20

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Bug fixes

• Avoid failing when deserializing unknown tags (#​10655)

v0.5.19

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Enhancements

• Filter wheels from lockfile based on architecture (#​10584)
• Omit dynamic versions from the lockfile (#​10622)
• Add support for pip freeze --path (#​10488)
• Reduce verbosity of inline-metadata message when using uv run <script.py> (#​10588)
• Add opt-in Git LFS support (#​10335)
• Recommend --native-tls on SSL errors (#​10605)
• Show expected and available ABI tags in resolver errors (#​10527)
• Show target Python version in error messages (#​10582)
• Add --output-format=json support to uv python list (#​10596)

Python

The managed Python distributions have been updated, including:

• Python 3.14 support on Windows
• Python 3.14.0a4 support
• 64-bit RISC-V Linux support
• Bundled libedit updated from 2021091-3.1 -> 2024080-3.1
• Bundled tcl/tk updated from 8.6.12 -> 8.6.14 (for all Python versions on Unix, only for Python 3.14 on Windows)

See the python-build-standalone release notes for more details.

Performance

• Avoid allocating when stripping source distribution extension (#​10625)
• Reduce WheelFilename to 48 bytes (#​10583)
• Reduce distribution size to 200 bytes (#​10601)
• Remove import re from entrypoint wrapper scripts (#​10627)
• Shrink size of platform tag enum (#​10546)
• Use ArcStr in verbatim URL (#​10600)
• Use memchr for wheel parsing (#​10620)

Bug fixes

• Avoid reading symlinks during uv python install on Windows (#​10639)
• Correct Pyston tag format (#​10580)
• Provide pyproject.toml path for parse errors in uv venv (#​10553)
• Don't treat setuptools and wheel as seed packages in uv sync on Python 3.12 (#​10572)
• Fix git-tag cache-key reader in case of slashes (#​10467) (#​10500)
• Include build tag in rendered wheel filenames (#​10599)
• Patch embedded install path for Python dylib on macOS during python install (#​10629)
• Read cached registry distributions when --config-settings are present (#​10578)
• Show resolver hints for packages with markers (#​10607)

Documentation

• Add meta titles to documents in guides, excluding integration documents (#​10539)
• Remove build-system from example workspace rot (#​10636)

Preview features

• Make build backend type annotations more generic (#​10549)

v0.5.18

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Bug fixes

• Avoid forking for identical markers (#​10490)
• Avoid panic in uv remove when only comments exist (#​10484)
• Revert "improve shell compatibility of venv activate scripts (#​10397)" (#​10497)

v0.5.17

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This release includes support for generating lockfiles from scripts based on inline metadata, as defined in PEP 723.

By default, scripts remain unlocked, and must be locked explicitly with uv lock --script /path/to/script.py, which
will generate a lockfile adjacent to the script (e.g., script.py.lock). Once generated, the lockfile will be
respected (and updated, if necessary) across uv run --script, uv add --script, and uv remove --script invocations.

This release also includes support for uv export --script and uv tree --script. Both commands support PEP 723
scripts with and without accompanying lockfiles.

Enhancements

• Add support for locking PEP 723 scripts (#​10135)
• Respect PEP 723 script lockfiles in uv run (#​10136)
• Update PEP 723 lockfile in uv add --script (#​10145)
• Update PEP 723 lockfile in uv remove --script (#​10162)
• Add --script support to uv export for PEP 723 scripts (#​10160)
• Add --script support to uv tree for PEP 723 scripts (#​10159)
• Add ls alias to uv {tool, python, pip} list (#​10240)
• Allow reading --with-requirements from stdin in uv add and uv run (#​10447)
• Warn-and-ignore for unsupported requirements.txt options (#​10420)

Preview features

• Add remaining Python type annotations to build backend (#​10434)

Performance

• Avoid allocating for names in the PEP 508 parser (#​10476)
• Fetch concurrently for non-first-match index strategies (#​10432)
• Remove unnecessary .to_string() call (#​10419)
• Respect sentinels in package prioritization (#​10443)
• Use ArcStr for marker values (#​10453)
• Use ArcStr for package, extra, and group names (#​10475)
• Use matches! rather than contains in requirements.txt parsing (#​10423)
• Use faster disjointness check for markers (#​10439)
• Pre-compute PEP 508 markers from universal markers (#​10472)

Bug fixes

• Fix UV_FIND_LINKS delimiter to split on commas (#​10477)
• Improve uv tool list output when tool environment is broken (#​10409)
• Only track markers for compatible versions (#​10457)
• Respect requires-python when installing tools (#​10401)
• Visit proxy packages eagerly (#​10441)
• Improve shell compatibility of venv activate scripts (#​10397)
• Read publish username from URL (#​10469)

Documentation

• Add Lambda layer instructions to AWS Lambda guide (#​10411)
• Add uv lock --script to the docs (#​10414)
• Use Windows-specific instructions in Jupyter guide (#​10446)