* Create /var/lib/udisks because that's where udisks keeps its mtab

file.  Without this, users are not able to unmount their own
  devices (because udisks doesn't remember who mounted them).

svn path=/nixos/trunk/; revision=28730

modules/services/hardware/udisks.nix

@@ -33,6 +33,11 @@ with pkgs.lib;
 
     services.dbus.packages = [ pkgs.udisks ];
 
+    system.activationScripts.udisks =
+      ''
+        mkdir -m 0755 -p /var/lib/udisks
+      '';
+
   };
 
 }