I'm unmask and install x11-libs/libXrender-0.9.4. After this anyone emerge -uDav world generate message !!! Multiple versions within a single package slot have been pulled !!! into the dependency graph, resulting in a slot conflict: x11-libs/libXrender:0 ('ebuild', '/', 'x11-libs/libXrender-0.9.2', 'merge') pulled in by ('installed', '/', 'x11-base/xorg-server-1.3.0.0-r6', 'nomerge') @world ('installed', '/', 'x11-libs/libXrender-0.9.4', 'nomerge') pulled in by @world ('installed', '/', 'x11-libs/gtk+-2.12.11', 'nomerge') ('installed', '/', 'x11-libs/libXcursor-1.1.9', 'nomerge') (and 13 more) It may be possible to solve this problem by using package.mask to prevent one of those packages from being selected. However, it is also possible that conflicting dependencies exist such that they are impossible to satisfy simultaneously. If such a conflict exists in the dependencies of two different packages, then those packages can not be installed simultaneously. For more information, see MASKED PACKAGES section in the emerge man page or refer to the Gentoo Handbook. Reproducible: Always
According to the emerge output, the installed xorg-server-1.3.0.0-r6 has pulled in libXrender-0.9.2 as a dependency. If you want libXrender-0.9.4 then you'll also have to unmask at least xorg-server-1.4.0.90-r3.
