* Allow Upstart jobs to declare that they shouldn't be restarted by

switch-to-configuration.  E.g. the X server shouldn't be restarted
  because that kills all the X clients.

svn path=/nixos/trunk/; revision=33223

modules/virtualisation/xen-dom0.nix

@@ -140,6 +140,8 @@ in
 
         stopOn = "starting shutdown and stopping xend";
 
+        restartIfChanged = false;
+        
         path = [ pkgs.xen ];
 
         environment.XENDOM_CONFIG = "${xen}/etc/sysconfig/xendomains";