diff --git a/system/options.nix b/system/options.nix
index a2952b4a325..912a6de6b4b 100644
--- a/system/options.nix
+++ b/system/options.nix
@@ -967,18 +967,6 @@ in
 
     };
 
-    portmap = {
-
-      enable = mkOption {
-        default = false;
-        description = ''
-          Whether to enable `portmap', an ONC RPC directory service
-          notably used by NFS and NIS, and which can be queried
-          using the rpcinfo(1) command.
-        '';
-      };
-    };
-
     avahi = {
 
       enable = mkOption {
@@ -3081,5 +3069,6 @@ root        ALL=(ALL) SETENV: ALL
     (import ../upstart-jobs/rogue.nix)
     (import ../upstart-jobs/guest-users.nix)
     (import ../upstart-jobs/pulseaudio.nix)
+    (import ../upstart-jobs/portmap.nix)
   ];
 }
diff --git a/upstart-jobs/default.nix b/upstart-jobs/default.nix
index f804240a50b..fa92cd57c8f 100644
--- a/upstart-jobs/default.nix
+++ b/upstart-jobs/default.nix
@@ -220,12 +220,6 @@ let
       servers = config.services.ntp.servers;
     })
 
-  # portmap daemon.
-  ++ optional config.services.portmap.enable
-    (import ../upstart-jobs/portmap.nix {
-      inherit (pkgs) makePortmap;
-     })
-
   # Avahi daemon.
   ++ optional config.services.avahi.enable
     (import ../upstart-jobs/avahi-daemon.nix {
diff --git a/upstart-jobs/portmap.nix b/upstart-jobs/portmap.nix
index 18ff06dc1af..9cb96b08b0d 100644
--- a/upstart-jobs/portmap.nix
+++ b/upstart-jobs/portmap.nix
@@ -1,35 +1,68 @@
-{ makePortmap }:
+{pkgs, config, ...}:
+
+###### interface
+let
+  inherit (pkgs.lib) mkOption mkIf;
+  inherit (pkgs) makePortmap;
+
+  uid = (import ../system/ids.nix).uids.portmap;
+  gid = (import ../system/ids.nix).gids.portmap;
+
+  options = {
+    services = {
+      portmap = {
+
+        enable = mkOption {
+          default = false;
+          description = ''
+            Whether to enable `portmap', an ONC RPC directory service
+            notably used by NFS and NIS, and which can be queried
+            using the rpcinfo(1) command.
+          '';
+        };
+
+      };
+    };
+  };
 
-let uid = (import ../system/ids.nix).uids.portmap;
-    gid = (import ../system/ids.nix).gids.portmap;
 in
-{
-  name = "portmap";
-  
-  users = [
-    { name = "portmap";
-      inherit uid;
-      description = "portmap daemon user";
-      home = "/var/empty";
-    }
+
+###### implementation
+mkIf config.services.portmap.enable {
+  require = [
+    options
   ];
-
-  groups = [
-    { name = "portmap";
-      inherit gid;
-    }
-  ];
-
-  job =
-    let portmap = makePortmap { daemonUID = uid; daemonGID = gid; };
-    in
-       ''
-description "ONC RPC portmap"
-
-start on network-interfaces/started
-stop on network-interfaces/stop
-
-respawn ${portmap}/sbin/portmap
-'';
   
+  users = {
+    extraUsers = [
+      { name = "portmap";
+        inherit uid;
+        description = "portmap daemon user";
+        home = "/var/empty";
+      }
+    ];
+
+    extraGroups = [
+      { name = "portmap";
+        inherit gid;
+      }
+    ];
+  };
+
+  services = {
+    extraJobs = [{
+      name = "portmap";
+
+      job =
+        let portmap = makePortmap { daemonUID = uid; daemonGID = gid; };
+        in ''
+          description "ONC RPC portmap"
+
+          start on network-interfaces/started
+          stop on network-interfaces/stop
+
+          respawn ${portmap}/sbin/portmap
+        '';
+    }];
+  };
 }