Added language switch support to xserver.nix

svn path=/nixos/trunk/; revision=9367

system/options.nix

@@ -702,7 +702,23 @@
       Event device for Synaptics touchpad.
     ";
   }
-  
+
+  {
+	name = ["services" "xserver" "layout"];
+	default = "us";
+	description ="
+	Keyboard layout.
+	";
+  }  
+
+  {
+	name = ["services" "xserver" "xkbOptions"];
+	default = "";
+	example = "grp:caps_toggle, grp_led:scroll";
+	description ="
+	X keyboard options; layout switching goes here.
+	";
+  }  
 
   
   {

upstart-jobs/xserver.conf

@@ -27,9 +27,10 @@ Section "InputDevice"
   Driver       "kbd"
   Identifier   "Keyboard[0]"
   Option       "Protocol" "Standard"
-  Option       "XkbLayout" "us"
+  Option       "XkbLayout" "@layout@"
   Option       "XkbModel" "pc104"
   Option       "XkbRules" "xfree86"
+  @xkbOptions@
 EndSection
 
 

upstart-jobs/xserver.nix

@@ -98,6 +98,11 @@ let
 	 Option \"TapButton3\" \"3\"
 	EndSection " else "");
 
+	xkbOptions = (if (getCfg "xkbOptions") == "" then "" else 
+		"  Option \"XkbOptions\" \""+(getCfg "xkbOptions")+"\"");
+
+	layout = getCfg "layout";
+
 	corePointer = (if getCfg "isSynaptics" then "Touchpad[0]" else "Mouse[0]");