Looking at the ebuild, there is no information following the "depend" info and the 'DOCS="AUTHORS COPYING* ChangeLog INSTALL NEWS README"' line. emerge -vuUDp world produces: Calculating dependencies / emerge: there are no masked or unmasked ebuilds to satisfy "dev-python/PyXML". !!! Problem with ebuild gnome-base/libgnomeui-2.2.2 !!! Possibly a DEPEND/*DEPEND problem. !!! Depgraph creation failed. Reproducible: Always Steps to Reproduce: 1. 2. 3. I've removed the ebuild and sync'd with another mirror. Same problem.
There's a forums thread on this too. Other ebuilds are reporting the same error. http://forums.gentoo.org/viewtopic.php?t=79159 Another sync seems to have resolved my problem as well.
PyXML bug
already corrected