{ pkgs, lib, culr, version, ... }: pkgs.stdenvNoCC.mkDerivation { pname = "culr-tests"; version = "${version}"; nativebuildInputs = [culr]; src = ./.; doCheck = true; checkPhase = '' CULRS="(255,0,0);(0,0,255);#00FF00" CULR_ORDER="1;0;2" echo "one two three four" | ${lib.getExe culr} ''; installPhase = '' mkdir "$out" ''; }