Not really. I've looked at the ctypes bindings (I've got a set of incomplete patches to them), and they lack diff and replay support, which makes them basically

Not really. I've looked at the ctypes bindings (I've got a set of incomplete patches to them), and they lack diff and replay support, which makes them basically useless for building a client. Git uses the perl bindings, so I can't speak to the quality of those. Bazaar uses a library called subvertpy that they wrote when they got tired of the suck and pain that is the Python SWIG bindings for Subversion. I'm about to switch to using that for hgsubversion, since fixing up the ctypes bindings has proven to be nothing more than a monumental pain.