Add the option to individually define for each input file whether to warn or stop in case the file is not found. #132

	name: check

	on:
	push:
	branches: [main, master]
	pull_request:
	branches: [main, master]

	jobs:
	check:
	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v4

	- uses: r-lib/actions/setup-pandoc@v2

	- uses: r-lib/actions/setup-r@v2
	with:
	use-public-rspm: true
	extra-repositories: "https://rse.pik-potsdam.de/r/packages"

	- uses: r-lib/actions/setup-r-dependencies@v2
	with:
	extra-packages: \|
	any::lucode2
	any::covr
	any::madrat
	any::magclass
	any::citation
	any::gms
	any::goxygen
	any::GDPuc
	# piam packages also available on CRAN (madrat, magclass, citation,
	# gms, goxygen, GDPuc) will usually have an outdated binary version
	# available; by using extra-packages we get the newest version

	- uses: actions/setup-python@v5
	with:
	python-version: 3.9

	- name: Install python dependencies if applicable
	run: \|
	[ -f requirements.txt ] && python -m pip install --upgrade pip wheel \|\| true
	[ -f requirements.txt ] && pip install -r requirements.txt \|\| true

	- name: Verify validation key
	shell: Rscript {0}
	run: lucode2:::validkey(stopIfInvalid = TRUE)

	- name: Verify that lucode2::buildLibrary was successful
	if: github.event_name == 'pull_request'
	shell: Rscript {0}
	run: lucode2:::isVersionUpdated()

	- name: Checks
	shell: Rscript {0}
	run: \|
	options(crayon.enabled = TRUE)
	lucode2::check(runLinter = FALSE)

	- name: Test coverage
	shell: Rscript {0}
	run: \|
	nonDummyTests <- setdiff(list.files("./tests/testthat/"), c("test-dummy.R", "_snaps"))
	if(length(nonDummyTests) > 0) covr::codecov(quiet = FALSE)
	env:
	NOT_CRAN: "true"

Provide feedback