[Duplicity-talk] Permission peculiarity with sftp backend

[Gabriel Ambuehl]

For some reason I had revoked my backup ssh user write access to its backup 
directory which fails in a peculiar way. Instead of complaining about 
permissions, the sftp backend will first download the files it needs to work 
with but then simply state ssh-password error and keep retrying for the set 
number of tries to then finally fail with a traceback. It looks like duplicity 
cannot really distinguish the outcomes from sftp. 

I also wonder if it perhaps would make sense to use a purepython 
implementation of ssh/sftp (like paramiko) to solve issues like these?