Add steps to check out default.nix files #1491

	# Workflow derived from https://github.com/r-lib/actions/tree/v2/examples
	# Need help debugging build failures? Start at https://github.com/r-lib/actions#where-to-find-help
	on:
	push:
	branches: [main, master]
	pull_request:
	branches: [main, master]

	name: devtools-tests-via-r-nix

	permissions:
	contents: read

	jobs:
	devtools_test:
	runs-on: ${{ matrix.os }}
	strategy:
	matrix:
	os: [macos-latest, ubuntu-latest]
	env:
	GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}

	steps:
	- uses: actions/checkout@v4

	- name: Create this folder to silence warning
	run: mkdir -p ~/.nix-defexpr/channels

	- name: Create .Renviron
	run: \|
	echo "GITHUB_PAT=${{ secrets.GITHUB_TOKEN }}" >> ~/.Renviron
	shell: bash

	- uses: cachix/install-nix-action@v31
	with:
	nix_path: nixpkgs=https://github.com/rstats-on-nix/nixpkgs/archive/refs/heads/r-daily.tar.gz

	- uses: cachix/cachix-action@v14
	with:
	name: rstats-on-nix

	- name: Build dev-env
	run: nix-shell --quiet --pure -p cacert nix R rPackages.covr rPackages.codetools rPackages.xml2 rPackages.sys rPackages.devtools --run "Rscript -e \"sessionInfo()\""

	- name: devtools::test() via nix-shell
	run: nix-shell --quiet --pure -p cacert nix R rPackages.covr rPackages.codetools rPackages.xml2 rPackages.sys rPackages.devtools --run "Rscript -e \"devtools::test(stop_on_failure = TRUE)\""

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