uv 0.5.9

on Python PyPI

Release Notes

Enhancements

• Fork version selection based on requires-python requirements (#9827)
• Patch sysconfig data at install time (#9857)
• Remove -isysroot when patching sysconfig (#9860)

Configuration

• Introduce a --fork-strategy preference mode (#9868)
• Add support for UV_OFFLINE (#9795)

Bug fixes

• Avoid panic!() when current directory does not exist (#9876)
• Avoid reusing interpreter metadata when running under Rosetta (#9846)
• Avoid trailing slash when deserializing from lockfile (#9848)
• Fix bug in terms when collapsing unavailable versions in resolver errors (#9877)
• Fix suggestion to use uv help python on invalid install requests (#9820)
• Skip root when assessing prefix viability (#9823)
• Avoid spurious 'Upgraded tool environment' in uv tool upgrade (#9870)

Rust API

• Upgrade minimum Rust version to 1.83 (#9815)

Documentation

• Document the --fork-strategy setting (#9887)

Preview features

• Build backend: Allow underscores in entrypoints (#9825)

Install uv 0.5.9

Install prebuilt binaries via shell script

curl --proto '=https' --tlsv1.2 -LsSf https://github.com/astral-sh/uv/releases/download/0.5.9/uv-installer.sh | sh

Install prebuilt binaries via powershell script

powershell -ExecutionPolicy ByPass -c "irm https://github.com/astral-sh/uv/releases/download/0.5.9/uv-installer.ps1 | iex"

Download uv 0.5.9