[setup-lang] Install uv when running for python

[erayaydin]

Summary

• Install uv with astral-sh/setup-uv action for Python projects in the setup-lang action

Note

uv is installed unconditionally for all Python projects without an opt-in input or uv.lock check. setup-uv is fast and harmless if unused, and any Python SDK adopting uv would need it. Adding an input just creates one more thing every caller has to remember to set.

[changeset-bot]

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Latest commit: 44048a2

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[github-actions]

⚠️ This PR doesn't contain any changesets. If there are user-facing changes, don't forget to run:

pnpm exec changeset

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[github-actions]

This PR will create a minor release 🚀

⚠️ This is a test run of the release-notes-comment action that can be found in .github/workflows/analyze-commits.yml

1.5.0 (2026-07-01)

Features

• bump third-party actions for setup-lang (27c5afe)
• conventional-changelog-dx-team: convert ESM (80f5663)
• setup-lang: install uv when run for python (44048a2)

Bug Fixes

• add default and required to major version (7062145)
• add permissions for the move workflow (be71e80)
• conventional-changelog-dx-team: add exports (33b55b0)
• peel annotated tags and quote inputs (823dfcb)
• use fully ref in reachability check (76b027c)
• use merge-base for main reachability check (fde94d0)

[Copilot]

Pull request overview

This PR updates the internal setup-lang composite GitHub Action to ensure uv is installed whenever the action is used for Python projects, enabling Python repositories to adopt uv without additional workflow changes.

Changes:

• Add an Install uv step gated on inputs.language == 'python' using astral-sh/setup-uv (pinned to a commit SHA).

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