File baselibs.conf of Package libXScrnSaver
libXss1 libXScrnSaver-devel requires -libXScrnSaver-<targettype> requires "libXss1-<targettype> = <version>"
libXss1 libXScrnSaver-devel requires -libXScrnSaver-<targettype> requires "libXss1-<targettype> = <version>"