chore(deps): bump astral-sh/uv from 0.11 to 0.12

[dependabot]

Bumps astral-sh/uv from 0.11 to 0.12.

Release notes

Sourced from astral-sh/uv's releases.

0.12.0

Release Notes

Released on 2026-07-28.

Since we released uv 0.11.0 in March, we've accumulated changes that improve correctness, safety, and compatibility with specifications, but could break some workflows. This release contains those changes; many have been marked as breaking out of an abundance of caution.

We expect most users to be able to upgrade without making changes.

There are no breaking changes to the configuration of the uv build backend. If your [build-system] table includes an upper bound on uv_build, update it to allow uv_build 0.12, e.g., uv_build>=0.11.32,<0.13.

Breaking changes

• Define build systems by default with uv init (#19197)

  Projects created with uv init now declare a build system and are packaged by default. This was the default project layout all the way back in v0.3, but we found that the use of the hatchling build system was confusing to newcomers and consequently dropped use of a build system by default in v0.4. Since then, we've created our own build system (uv_build) with tight integration with uv and are excited to restore the default to a best-practice project layout.

  Previously, uv init example created an unpackaged layout containing main.py and a pyproject.toml without a build system. The project could declare dependencies but was not itself installed into its virtual environment.

  Now, uv init example defines a [build-system] using uv_build, places application source code in src/example, and includes a [project.scripts] entry named example. Defining a build system allows the project to be imported from tests or other code, installed as a dependency, and run as a command:

  $ uv init example
  $ cd example
  $ uv run example
  Hello from example!

  Existing projects are unaffected. Use uv init --no-package example to create the previous unpackaged layout without a build system.

  See the project creation documentation for more details.

  This stabilizes the packaged-init preview feature.

• Reject unsupported source distribution and wheel archive formats (#18927)

  PEP 625 requires source distributions to use .tar.gz archives. Previously, uv also accepted legacy formats such as .tar.bz2 and .tar.xz. Those formats are now rejected, including when referenced by an existing lockfile. Legacy .zip source distributions remain supported for backwards compatibility.

  Wheels and other ZIP archives can no longer contain entries compressed with bzip2, LZMA, or XZ. Entries must use the stored, DEFLATE, or zstd compression methods.

  Removing support for uncommon compression methods reduces uv's compression dependencies and the attack surface exposed when processing untrusted packages.

  You cannot opt out of this behavior. If you depend on a legacy source distribution that uses an unsupported format, we recommend rebuilding it as a .tar.gz archive and regenerating any lockfile containing references to the legacy archive.

• Reject wheel files that could replace the Python interpreter (#20748, #20749)

  uv already rejected wheel entry points named python, but case variants such as Python were still accepted. On case-insensitive filesystems, including common macOS and Windows setups, these entry points could overwrite the virtual environment's interpreter.

  Wheels could also place interpreter files in their .data/scripts directory or in paths such as .data/data/bin/python, bypassing the entry-point check and replacing the interpreter during installation.

... (truncated)

Changelog

Sourced from astral-sh/uv's changelog.

Changelog

0.12.5

Released on 2026-08-14.

Python

• Add CPython 3.10.21, 3.11.16, and 3.12.14 (#21138)
• Prefer newer versions and standard variants when selecting between equally prioritized Python interpreters (#21134)

Enhancements

• Simplify errors and hints for invalid editable requirements, and redact credentials in requirement URLs (#21130)

Preview features

• Allow --index and --default-index to select configured package indexes by name with the index-by-name preview feature (#17455)
• Include distribution artifact URLs and hashes in CycloneDX SBOM exports by default (#21131)
• Fall back to logical file sizes when using cache-physical-space on filesystems that do not support physical-space accounting (#21133)

Bug fixes

• Resolve relative package index paths in PEP 723 scripts against the script directory (#21097)

0.12.4

Released on 2026-08-13.

Enhancements

• Prefer post-quantum key exchange and enable opt-in TLS diagnostics (#21054)
• Accept whitespace before versions in noncompliant wildcard comparisons such as Requires-Python: >= 3.5.* (#21012)
• Report a specific error when a PEP 723 closing tag contains trailing whitespace or other content (#20944)
• Omit source-span carets from diagnostics for empty PEP 508 requirements (#21094)

Preview features

• Add uv check --no-install-project and respect UV_NO_INSTALL_PROJECT to install dependencies without building or installing the project (#21085)
• Make the ty subprocess invoked by uv check honor uv's color and progress settings, including quiet mode (#21086)

Performance

• Speed up resolutions with long runs of unavailable package versions by coalescing gaps in the resolver's version ranges (#20804)
• Speed up Simple API parsing by deserializing PyPI and Pyx file metadata directly (#21041)

Bug fixes

... (truncated)

Commits

• b88d7c5 Archive the 0.11.x changelog (#20777)
• faff952 Update Rust crate jiff to v0.2.34 (#20710)
• 4c28d9c Keep changelog paragraphs on single lines (#20778)
• 43a1288 Bump version to 0.12.0 (#20775)
• 8fe5f80 Sync latest Python releases (#20682)
• b187a51 Honor certificate overrides when running remote scripts (#20767)
• 6e79013 Package explicitly requested applications by default (#20773)
• e4602de Reject broken .venv symlinks and surface metadata errors (#20433)
• 9391f97 Reject multi-dot pylock filenames (#20440)
• 06bba12 Honor explicit certificate sources even when empty (#20741)
• Additional commits viewable in compare view

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