I ran into the same problem, seemingly. After fiddling a bit with the various URL schemes, I hit on this:
duplicity /tmp/zooo s3://s3-eu-west-1.amazonaws.com/somebucket/somedirectory
which works.
Unfortunately, using the graphical Backup tool available through Settings still fails with a not-so-helpful popup saying "BackendException: No connection to backend".
I ran into the same problem, seemingly. After fiddling a bit with the various URL schemes, I hit on this:
duplicity /tmp/zooo s3://s3- eu-west- 1.amazonaws. com/somebucket/ somedirectory
which works.
Unfortunately, using the graphical Backup tool available through Settings still fails with a not-so-helpful popup saying "BackendException: No connection to backend".