Update flake lock #716

	---
	name: Update flake lock

	"on":
	schedule:
	- cron: 0 1 * * *
	workflow_dispatch:

	env:
	BRANCH_NAME: auto-flake-update

	jobs:
	update:
	runs-on: ubuntu-latest
	timeout-minutes: 10
	steps:
	- name: Install nix
	uses: DeterminateSystems/nix-installer-action@main
	with:
	github-token: ${{ secrets.GITHUB_TOKEN }}

	- name: Check out repository code
	uses: actions/checkout@v3
	with:
	token: ${{ secrets.GH_TOKEN }}

	- name: Create branch
	run: \|
	git fetch
	branch_exists=$(git branch --list "$BRANCH_NAME")
	if [ -z "$branch_exists" ]; then
	git checkout -b "$BRANCH_NAME"
	else
	git checkout "$BRANCH_NAME"
	git reset --hard origin/master
	fi

	- name: Update lock
	run: \|
	git config user.name 'github-actions'
	git config user.email 'actions@github.com'
	nix flake update --commit-lock-file
	git push --force --set-upstream origin "$BRANCH_NAME"

	- name: Open a PR
	env:
	GITHUB_TOKEN: ${{ secrets.GH_TOKEN }}
	run: \|
	gh pr create \
	--base master \
	--head "$BRANCH_NAME" \
	--title "[Flake] Auto update lock" \
	--body "" \
	--label automated \|\| exit 0

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