duplicity 0.7 on CentOS 6

CentOS only provides duplicity 0.6.x. However, versions up to including 0.7.12 run just fine using pexpect as the ssh/scp/sftp backend.

Here is a cheatsheet to make it run.

Remember to remove the RPM provided version:

yum remove duplicity

Make sure all dependencies are fulfilled (this is for core functionality):

yum install python-devel librsync-devel python-lockfile gnupg2 pexpect

Get duplicity 0.7.12. This is the last version that uses python-lockfile for locking. Later versions use fastener, that is not easily available on CentOS 6.
Luckily, this version also fixes problems with gpg available on CentOS 6.
Unpack, install and check the reported version:

wget https://mirror.netcologne.de/savannah/duplicity/duplicity-0.7.12.tar.gz
tar xf duplicity-0.7.12.tar.gz
cd duplicity-0.7.12
python setup.py install
duplicity -V

If all is fine, there is one last thing to consider. There seems to be a problem with the default SSH backend paramiko. To work around that, specify pexpect as the backend by prefixing the protocol used for the remote location with 'pexpect+'. This is explained in more detail in the man page of duplicity.

If you still get a wrong version number, here are the places to check for remaining files from other installations: