Merge pull request #103531 from gnidorah/acpilight

nixos/acpilight: add to packages

nixos/modules/hardware/acpilight.nix

···
   };
 
   config = mkIf cfg.enable {
+    environment.systemPackages = with pkgs; [ acpilight ];
     services.udev.packages = with pkgs; [ acpilight ];
   };
 }