To clarify, jj is not derived from Mercurial, but it's heavily inspired by it. The current DVCS solution at Google (called Fig) is based on Mercurial, however.

To clarify, jj is not derived from Mercurial, but it's heavily inspired by it. The current DVCS solution at Google (called Fig) is based on Mercurial, however. But we're hoping to replace it by jj.