I wrote:
Basically, the safest solution would be to fix xz, then rebuild all
noarch
packages. At least those noarch packages which happened to be built on a
PPC builder will need rebuilding after xz gets fixed. Please note that
this probably also affects noarch subpackages.
PS: If we don't care about F11->F12 and Rawhide->F12 deltas, then we don't
have to rebuild anything, just fix xz before the release.
Kevin Kofler