Hi Ormod.

Regarding python 3 porting, I hope we can coordinate our efforts. 

There are some details of what I have done so far here on the mailing list in the thread titled "Python 3 porting" 
https://lists.launchpad.net/dulwich-users/maillist.html
Starting at this message: https://lists.launchpad.net/dulwich-users/msg00812.html

There is some stuff missing there, so I will try fill that in soon (probably tomorrow evening.) I'll include what I'm working on, and what problems I've run into.

Regards,

Gary.