{ pkgs, lib, config, ... }: with lib; let cfg = config.programs.feedbackd; in { options = { programs.feedbackd = { enable = mkEnableOption '' the feedbackd D-BUS service and udev rules. Your user needs to be in the `feedbackd` group to trigger effects ''; package = mkPackageOption pkgs "feedbackd" { }; }; }; config = mkIf cfg.enable { environment.systemPackages = [ cfg.package ]; services.dbus.packages = [ cfg.package ]; services.udev.packages = [ cfg.package ]; users.groups.feedbackd = {}; }; }