Workaround a virtualenv-tools limitation
Workaround a virtualenv-tools limitation

brutasse/graphite-api,rackerlabs/graphite-api,brutasse/graphite-api,rackerlabs/graphite-api,raintank/graphite-api,winguru/graphite-api,raintank/graphite-api,raintank/graphite-api,winguru/graphite-api