Release Notes

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 20210910-3.1 -> 20240808-3.1
• 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)

Install uv 0.5.19

Install prebuilt binaries via shell script

curl --proto '=https' --tlsv1.2 -LsSf https://github.com/astral-sh/uv/releases/download/0.5.19/uv-installer.sh | sh

Install prebuilt binaries via powershell script

powershell -ExecutionPolicy ByPass -c "irm https://github.com/astral-sh/uv/releases/download/0.5.19/uv-installer.ps1 | iex"

Download uv 0.5.19