Details at: http://forums.gentoo.org/viewtopic-p-3058918.html emerge of pyopengl was failing because opengl-update was not working. I was recommended to try "emerge eselect-opengl". It worked. I emerged eselect-opengl and after that pyopengl emerged fine. Can someone please add eselect-opengl as a dependency for pyopengl. Thanks Ajay
pyopengl depends on virtual/opengl