Piper is a reimplementation of Perforce, because they had an existing gigantic source repository in Perforce and needed something compatible. There was an earli

Piper is a reimplementation of Perforce, because they had an existing gigantic source repository in Perforce and needed something compatible. There was an earlier project to migrate to SVN but that failed. I believe Git was never in contention due to the obvious scalability problems, but GVFS does seem like it might potentially be usable at Google.