{ stdenvNoCC, lib, theme }: let themes = builtins.map (theme: (builtins.head (lib.strings.splitString "." theme))) (builtins.attrNames (builtins.readDir ./../assets/backgrounds)); in assert builtins.any (x: x == theme) themes; stdenvNoCC.mkDerivation { name = "distro-grub-themes"; src = ./../.; installPhase = '' mkdir -p $out cp ./assets/backgrounds/${theme}.png $out/background.png cp ./assets/splash_image.jpg $out/splash_image.jpg cp -r ./assets/icons $out cp -r ./assets/fonts/. $out cp -r ./assets/menu/. $out cp -r ./assets/theme.txt $out ''; meta = with lib; { homepage = "https://github.com/AdisonCavani/distro-grub-themes"; description = "A pack of GRUB2 themes for each Linux distribution"; license = licenses.gpl3; maintainers = with maintainers; [ zakuciael ]; platforms = platforms.linux; }; }