Oh, I see. You mean forking the older version. Sort of, I suppose. A recent example I've been monitoring where this hasn't worked very well is Rhodecode. It wa

Oh, I see. You mean forking the older version. Sort of, I suppose. A recent example I've been monitoring where this hasn't worked very well is Rhodecode. It was originally GPL'ed and then got locked up into proprietary software (through lies and subterfuge, I must add). The Mercurial folks took the last clearly GPL'ed version and forked it into Kallithea. But Kallithea is not Rhodecode, and Rhodecode has in the meantime added a bunch of development and features that are as restrictive as possible. I wouldn't take this to mean that Rhodecode is still available under the least restrictive license. The authors have really taken Rhodecode away from us, and we can scamper about with a fork, but there has definitely been some damage done.