From 00cd8c4235e853cb9cbbf4c981d6c02ac7607e71 Mon Sep 17 00:00:00 2001
From: Peter Simons <simons@cryp.to>
Date: Mon, 2 Apr 2012 14:19:09 +0000
Subject: [PATCH] prune empty directory

svn path=/nixpkgs/branches/stdenv-updates/; revision=33537