File baselibs.conf of Package libICE
libICE6 provides "xorg-x11-libICE-<targettype> = 7.6_<version>" obsoletes "xorg-x11-libICE-<targettype> < 7.6_<version>" libICE-devel requires -libICE-<targettype> requires "libICE6-<targettype> = <version>" provides "xorg-x11-libICE-devel-<targettype> = 7.6_<version>" obsoletes "xorg-x11-libICE-devel-<targettype> < 7.6_<version>"