{ config, lib, pkgs, ...}: with lib; let cfg = config.services.hardware.bolt; in { options = { services.hardware.bolt = { enable = mkOption { type = types.bool; default = false; description = '' Whether to enable Bolt, a userspace daemon to enable security levels for Thunderbolt 3 on GNU/Linux. Bolt is used by GNOME 3 to handle Thunderbolt settings. ''; }; package = mkPackageOption pkgs "bolt" { }; }; }; config = mkIf cfg.enable { environment.systemPackages = [ cfg.package ]; services.udev.packages = [ cfg.package ]; systemd.packages = [ cfg.package ]; }; }