It looks like the pure-Python fallback implementations were a big deal for the (nearly resurrected) Jython project, in particular: http://fwierzbicki.blogspot.

It looks like the pure-Python fallback implementations were a big deal for the (nearly resurrected) Jython project, in particular: http://fwierzbicki.blogspot.com/2009/02/progress-with-mercurial-on-jython.html http://fwierzbicki.blogspot.com/2009/02/progress-with-mercur...