{ lib, config, pkgs, namespace, ... }: with lib; with lib.${namespace}; let cfg = config.${namespace}.services.printer; in { options.${namespace}.services.printer = { enable = mkBoolOpt false "Printer"; }; config = mkIf cfg.enable { services.printing = { enable = true; drivers = [ pkgs.hplip ]; }; services.avahi = { enable = true; nssmdns4 = true; openFirewall = true; }; }; }