Release v2.21.1 #699

	name: Build package / publish

	on:
	# On PR commits, check build completes w/o error.
	pull_request:
	branches: [ main ]
	push:
	branches: [ main ]
	# Publish on any push of a new tag, including
	# 'vrc' pushed to a PR branch.
	tags: [ "v*" ]
	# Publish on new releases.
	release:
	types: [ published ]

	concurrency:
	group: ${{ github.workflow }}-${{ github.ref }}
	cancel-in-progress: true

	jobs:
	publish:
	environment:
	name: publish

	permissions:
	id-token: write

	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v4
	# On 'pull_request' and some 'push' events,
	# setuptools-scm or versioningit will give
	# '0.1.dev1'. To confirm that the build system
	# generates the desired version string,
	# uncomment these lines and adjust fetch-depth.
	# with:
	# fetch-depth: 10
	# fetch-tags: true

	- uses: astral-sh/setup-uv@v5
	with:
	cache-dependency-glob: "**/pyproject.toml"
	python-version: "3.13"

	- name: Build
	run: uv build

	- name: Publish
	if: >-
	github.event_name == 'release' \|\| (
	github.event_name == 'push'
	&& startsWith(github.ref, 'refs/tags')
	)
	# Uncomment for testing
	# env:
	# UV_PUBLISH_URL: https://test.pypi.org/legacy/
	run: uv publish --trusted-publishing=always

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