The package rpms/mapnik.git has added or updated architecture specific content in its spec file (ExclusiveArch/ExcludeArch or %ifarch/%ifnarch) in commit(s): http://pkgs.fedoraproject.org/cgit/rpms/mapnik.git/commit/?id=f3810fe5e0ba20....
Change: +ExcludeArch: ppc ppc64 s390 s390x
Thanks.