--- a/core/moduleapi.lua	Sat Apr 27 19:14:22 2013 +0200
+++ b/core/moduleapi.lua	Sat Apr 27 19:44:37 2013 +0200
@@ -335,6 +335,7 @@
 		end
 		item.name = item_name;
 	end
+	item._provided_by = self.name;
 	self:add_item(name.."-provider", item);
 end