Add options to hide the cursor and define the default user.

svn path=/nixos/trunk/; revision=11664

system/options.nix

@@ -1182,6 +1182,23 @@
           ";
         };
 
+        defaultUser = mkOption {
+          default = "";
+          example = "login";
+          description = "
+            The default user to load. If you put a username here you
+            get it automatically loaded into the username field, and
+            the focus is placed on the password.
+          ";
+        };
+
+        hideCursor = mkOption {
+          default = false;
+          example = true;
+          description = "
+            Hide the mouse cursor on the login screen.
+          ";
+        };
       };
 
       isClone = mkOption {

upstart-jobs/xserver.nix

@@ -294,6 +294,8 @@ let
     login_cmd exec ${stdenv.bash}/bin/sh ${clientScript}
     halt_cmd ${pkgs.upstart}/sbin/shutdown -h now
     reboot_cmd ${pkgs.upstart}/sbin/shutdown -r now
+    ${if cfg.slim.defaultUser != "" then "default_user " + cfg.slim.defaultUser else ""}
+    ${if cfg.slim.hideCursor then "hidecursor true" else ""}
   '';