Main package "syslinux" does: Obsoletes: syslinux-devel < %{version}-%{release} Provides: syslinux-devel However, a syslinux-devel subpackage definition is present. A -devel package is built. No comment explains above Obs/Prov pair. %changelog only says: * Thu Dec 17 2009 Peter Jones … - 3.83-2 - Split out -devel * Tue Aug 22 2006 Jesse Keating … - 3.11-4 - Obsolete syslinux-devel. - Couple cleanups for packaging guidelines * Mon Jun 12 2006 Peter Jones … - 3.11-2 - Fold -devel subpackage into "syslinux" # repoquery --archlist=src --whatrequires syslinux --disablerepo='*' --enablerepo=fedora-source gpxe-0:1.0.1-4.fc16.src ltsp-0:5.1.95-3.fc16.src # repoquery --archlist=src --whatrequires syslinux-devel --disablerepo='*' --enablerepo=fedora-source # -- Fedora release 16 (Verne) - Linux 3.1.1-2.fc16.x86_64 loadavg: 0.17 0.10 0.07 -- devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/devel