{ options, config, lib, pkgs, ... }: with lib; with lib.plusultra; let cfg = config.plusultra.apps.dolphin; in { options.plusultra.apps.dolphin = with types; { enable = mkBoolOpt false "Whether or not to enable Dolphin."; }; config = mkIf cfg.enable { environment.systemPackages = with pkgs; [ dolphin-emu ]; # Enable GameCube controller support. services.udev.packages = [ pkgs.dolphinEmu ]; }; }