Richard Shaw <hobbes1069 <at> gmail.com> writes:
Hmm... In that case I may just install a F14 virtual machine and leave it modified just for this purpose. Not worried about efficiency, I'll just leave it going in the background.
It's possible to take a shortcut by leaving the Koji xz packages installed, and switch between old and new compression by updating/downgrading just the deltarpm packages. It would mean keeping Rawhide packages installed and not getting possible F14 xz updates, but it would work. Personally I prefer to undo the entire modification, though.