Update Nix #59

	name: Update Nix

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

	jobs:
	update-nix:
	name: Update Nix
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	with:
	ref: main
	ssh-key: ${{ secrets.UPDATE_SSH_KEY }}
	- uses: cachix/install-nix-action@v30
	- run: nix flake update
	- name: Create PR
	env:
	GH_TOKEN: ${{ github.token }}
	run: \|
	if test -z "$(git status)"; then exit 0; fi

	git config --global user.name "Github Actions"
	git config --global user.email "noreply@github.com"

	BRANCH="nix-update-$(date -I)"
	git checkout -b "$BRANCH"
	git add flake.lock
	git commit --message "update Nix sources" --author "GitHub Actions <noreply@github.com>"

	git push -u origin "$BRANCH"
	gh pr create \
	--title "update Nix sources, $(date -I)" \
	--body "Automatically generated by GitHub actions at $(date)" \
	--head "$BRANCH"

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