release: use the nix flake to pin versions #14

# to view logs

	name: release
	on:
	push:
	branches:
	- main
	workflow_dispatch: {}
	jobs:
	release:
	runs-on: ubuntu-latest
	defaults:
	run:
	shell: nix develop --command bash {0}
	permissions:
	contents: write
	steps:
	- name: Checkout
	uses: actions/checkout@v4
	with:
	fetch-depth: 0
	- uses: DeterminateSystems/nix-installer-action@main
	- uses: DeterminateSystems/magic-nix-cache-action@main
	- uses: DeterminateSystems/flake-checker-action@main
	- name: Install dependencies
	run: \|
	yarn global add @backstage/cli
	yarn clean
	yarn install --frozen-lockfile
	- name: Build
	run: \|
	yarn tsc --jsx react-jsx
	yarn build
	- name: Release to GitHub releases
	run: errout=$(mktemp); gh release create $(cat package.json \| jq -r .version) -R $GITHUB_REPOSITORY -t $(cat package.json \| jq -r .version) --target $GITHUB_REF 2> $errout && true; exitcode=$?; if [ $exitcode -ne 0 ] && ! grep -q "Release.tag_name already exists" $errout; then cat $errout; exit $exitcode; fi
	env:
	GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
	GITHUB_REPOSITORY: ${{ github.repository }}
	GITHUB_REF: ${{ github.ref }}
	- name: Release to NPM
	run: npm publish --access public

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