cloudfoundry/cloud_controller_ng — pull request #160 by fraenkel (2014-02-12 05:24:59+00:00)
Title: Make buildpack bits (key) unique.

If you upload the same bits to two different buildpacks, they both have the same key. If you delete one of the buildpacks, the bits are removed from both.

I would have preferred to make the key based on the buildpack guid and buildpack zip file name rather than appending two guids.