File baselibs.conf of Package libfontenc
libfontenc1 provides "xorg-x11-libfontenc-<targettype> = 7.6_<version>" obsoletes "xorg-x11-libfontenc-<targettype> < 7.6_<version>" libfontenc-devel requires -libfontenc-<targettype> requires "libfontenc1-<targettype> = <version>" provides "xorg-x11-libfontenc-devel-<targettype> = 7.6_<version>" obsoletes "xorg-x11-libfontenc-devel-<targettype> < 7.6_<version>"