[tools.nix] fix formatting #6681

	name: niv-update

	on:
	push:
	schedule:
	- cron: '0 0 * * 1'

	jobs:
	niv-update:
	runs-on: ubuntu-latest
	env:
	# Results in crate2nix being updated every hour!
	# - crate2nix
	sources: nixpkgs nix-test-runner cargo-release nixpkgs-mozilla cachix
	steps:
	- uses: actions/checkout@v4
	- uses: cachix/install-nix-action@v20
	with:
	nix_path: nixpkgs=channel:nixos-unstable
	- uses: cachix/cachix-action@v12
	with:
	name: eigenvalue
	signingKey: '${{ secrets.CACHIX_SIGNING_KEY }}'
	- name: Install niv
	run: nix-env -if ./nix/dependencies.nix -A dev.niv
	- name: Update each source and push changes
	run: \|
	failed=""

	export GITHUB_TOKEN=${{ secrets.GITHUB_TOKEN }}

	for source in $sources; do
	git fetch origin master
	git reset --hard origin/master
	niv update $source
	if test -n "$(git status --porcelain)"; then
	(
	set -x
	git --no-pager diff HEAD
	git config --local user.email '[email protected]'
	git config --local user.name 'Peter Kolloch, Bot'
	n=0
	until [ $n -ge 5 ]
	do
	git commit -m "niv update: updated $source" -a
	./run_tests.sh --no-cargo-build \|\| {
	echo "Tests failed. Skip updating $source."
	failed="$failed $source"
	break
	}
	git push && break
	n=$[$n+1]
	sleep 1
	# Another try
	git fetch
	git reset --hard origin/master
	niv update $source
	done
	if [ $n -ge 5 ]; then
	echo "gave up after 5 tries"
	exit 1
	fi
	)
	else
	echo "no change for $source"
	fi
	done

	if [ -n "$failed" ]; then
	echo "The following sources couldn't be updated "
	echo "because of test failures:"
	echo "$failed"
	exit 3
	fi

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