Comment 5 for bug 629357

Here is a patch that implements compressing of duplicity archives using lzma (i.e. xz). It requires python-lzma to be installed.

Please be aware that decompressing is not yet implemented, so there is no way to restore such archives yet. Furthermore I have not tested this, so be aware that you might lose data if you use it.

I would appreciate if someone could help test this. Moreover I still couldn't figure out where in the code decompression is done, so I'd appreciate hints in regard to that so I can implement the rest.