# File Roller. { config, pkgs, lib, ... }: let cfg = config.programs.file-roller; in { ###### interface options = { programs.file-roller = { enable = lib.mkEnableOption "File Roller, an archive manager for GNOME"; package = lib.mkPackageOption pkgs "file-roller" { }; }; }; ###### implementation config = lib.mkIf cfg.enable { environment.systemPackages = [ cfg.package ]; services.dbus.packages = [ cfg.package ]; }; }