Set a branch in the action #14

	jobs:
	test:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v2
	- name: Install Nix
	uses: cachix/install-nix-action@v26
	with:
	extra_nix_config: accept-flake-config = true
	- uses: cachix/cachix-action@v14
	with:
	authToken: ${{ secrets.CACHIX_AUTH_TOKEN }}
	name: nickel-schemastore
	- env:
	GH_TOKEN: ${{ github.token }}
	name: Ensure that schema files don't need a rebuild
	run: \|-
	nix develop --command python3 ./extract-schemas.py
	if ! git diff --exit-code; then
	git checkout -b update-schemas-from-{{env.GITHUB_RUN_ID}}
	git add .
	git config user.name "Schemas update bot"
	git config user.email "noreply@schemaupdate.invalid"
	git commit --message="Re-generate the schema files"
	nix run --inputs-from . nixpkgs\#gh -- pr create \
	--title "Re-generate the schema files" \
	--body "Automated update from {{ env.GITHUB_RUN_ID }}"
	fi
	on:
	push: {}
	schedule:
	- cron: 0 0 * * 0
	workflow_dispatch: {}

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