File baselibs.conf of Package libXv
libXv1 provides "xorg-x11-libXv-<targettype> = 7.6_<version>" obsoletes "xorg-x11-libXv-<targettype> < 7.6_<version>" libXv-devel requires -libXv-<targettype> requires "libXv1-<targettype> = <version>" provides "xorg-x11-libXv-devel-<targettype> = 7.6_<version>" obsoletes "xorg-x11-libXv-devel-<targettype> < 7.6_<version>"