Keep TeX Live cache up-to-date #16

	# This workflow makes sure that there is always a cache present for the main branch.
	# This cache can be picked up by all other branches, so it ensures that even new
	# branches and tags don't have to download a complete copy of TeX Live.
	#
	# Since GitHub keeps unused caches for one week, we need to run at least once a week
	# to ensure that the cache always stays around. To avoid timing issues and issues
	# when an update fails for some reason, we run twice per week.

	name: Keep TeX Live cache up-to-date
	on:
	schedule:
	# Runs at 09:41 UTC daily.
	- cron: '41 9 * * *'

	jobs:
	cache:
	strategy:
	matrix:
	os: [ubuntu-latest, macos-latest, windows-latest]
	runs-on: ${{ matrix.os }}
	name: Update TeX Live
	steps:
	# To use `.github/tl_packages`, main repo must be checked out first.
	- name: Checkout repository
	uses: actions/checkout@v5
	- name: Install TeX Live
	uses: zauguin/install-texlive@v4
	with:
	# List the required TeX Live packages in a separate file to allow reuse in
	# different workflows.
	package_file: .github/tl_packages

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