emerge -e worldThese are the packages that would be merged, in order:Calculating world dependencies /!!! Multiple versions within a single package slot have been!!! pulled into the dependency graph:('ebuild', '/', 'x11-proto/renderproto-0.9.2', 'merge') pulled in by ('ebuild', '/', 'x11-base/xorg-server-1.3.0.0', 'merge')('ebuild', '/', 'x11-proto/renderproto-0.9.3', 'merge') pulled in by ('ebuild', '/', 'x11-libs/cairo-1.4.10', 'merge') ('ebuild', '/', 'x11-libs/libXrender-0.9.2', 'merge')It may be possible to solve this problem by using package.mask toprevent one of those packages from being selected. However, it is alsopossible that conflicting dependencies exist such that they areimpossible to satisfy simultaneously. If such a conflict exists in thedependencies of two different packages, then those packages can not beinstalled simultaneously.For more information, see MASKED PACKAGES section in the emerge man pageor refer to the Gentoo Handbook.!!! Depgraph creation failed.