I don't have that, and I suspect it's because I'm using DAG and/or perhaps package protection?
yum list libXpm-devel
Loading "priorities" plugin
Setting up repositories
update 100% |=========================| 951 B 00:00
rpmforge 100% |=========================|
1.1 kB 00:00
base 100% |=========================| 1.1 kB 00:00
addons 100% |=========================| 951 B 00:00
extras 100% |=========================|
1.1 kB 00:00
Reading repository metadata in from local files
primary.xml.gz 100% |=========================| 1.8 MB 00:03
sqlite cache needs updating, reading in metadata
rpmforge : ################################################## 8045/8045
226 packages excluded due to repository priority protections