diff --git a/nixos/modules/services/networking/gdomap.nix b/nixos/modules/services/networking/gdomap.nix
index 7b5ba4fcf100..7f2d2159b481 100644
--- a/nixos/modules/services/networking/gdomap.nix
+++ b/nixos/modules/services/networking/gdomap.nix
@@ -11,22 +11,10 @@ in
   #
   options = {
     services.gdomap = {
-      enable = mkOption {
-        default = false;
-	description = "
-	  Whether to enable gdomap, the GNUstep distributed objects daemon.
-
-	  Note that gdomap runs as root.
-        ";
-      };
-
-      pidfile = mkOption {
-        type = types.path;
-        default = "/tmp/gdomap.pid";
-	description = "Location of the pid file for gdomap daemon";
-      };
+      enable = mkEnableOption "Whether to enable gdomap, the GNUstep distributed objects daemon";
     };
   };
+
   #
   # implementation
   #
@@ -37,10 +25,10 @@ in
       description = "gdomap server";
       wantedBy = [ "multi-user.target" ];
       after = [ "network.target" ];
-      path  = [ pkgs.gnustep_base ];
+      path  = [ pkgs.gnustep.base ];
       serviceConfig = {
         PIDFile = cfg.pidfile;
-        ExecStart = "@${pkgs.gnustep_base}/bin/gdomap"
+        ExecStart = "@${pkgs.gnustep.base}/bin/gdomap"
 	  + " -d -p"
 	  + " -I ${cfg.pidfile}";
 	Restart = "always";
diff --git a/nixos/modules/services/x11/gdnc.nix b/nixos/modules/services/x11/gdnc.nix
index dc17374191bd..965776e359f5 100644
--- a/nixos/modules/services/x11/gdnc.nix
+++ b/nixos/modules/services/x11/gdnc.nix
@@ -5,26 +5,23 @@ let
   cfg = config.services.gdnc;
 in {
   options = {
-    services.gdnc.enable = mkOption {
-      type = types.bool;
-      default = false;
-      example = true;
-      description = "Enable gdnc, the GNUstep distributed notification center";
-    };
+    services.gdnc.enable = mkEnableOption "Enable gdnc, the GNUstep distributed notification center";
   };
   config = mkIf cfg.enable {
     assertions = singleton {
       assertion = config.services.gdnc.enable -> config.services.gdomap.enable;
       message = "Cannot start gdnc without starting gdomap";
     };
-    environment.systemPackages = [ pkgs.gnustep_make pkgs.gnustep_base ];
+    environment.systemPackages = [ pkgs.gnustep.make pkgs.gnustep.base ];
     systemd.services.gdnc = {
-      path = [ pkgs.gnustep_base ];
+      path = [ pkgs.gnustep.base ];
       description = "gdnc: GNUstep distributed notification center";
       requires = [ "gdomap.service" ];
       wantedBy = [ "multi-user.target" ];
       serviceConfig = {
-        ExecStart = ''${pkgs.gnustep_base}/bin/gdnc -f'';
+        ExecStart = ''
+          ${pkgs.gnustep.base}/bin/gdnc -f
+	'';
         Restart = "always";
 	RestartSec = 10;
 	TimeoutStartSec = "30";