libX11-6 provides "xorg-x11-libX11-<targettype> = 7.6_<version>" obsoletes "xorg-x11-libX11-<targettype> < 7.6_<version>" libX11-xcb1 libX11-devel requires -libX11-<targettype> requires "libX11-6-<targettype> = <version>" requires "libX11-xcb1-<targettype> = <version>" provides "xorg-x11-libX11-devel-<targettype> = 7.6_<version>" obsoletes "xorg-x11-libX11-devel-<targettype> < 7.6_<version>"