These ebuilds come from http://git.overlays.gentoo.org/gitweb/?p=dev/wrobel/overlay.git;a=summary.
If you have some problems, go to the official site first.
zopeinterface : Standalone Zope interface library ( http://pypi.python.org/pypi/zope.interface/3.4.0 )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a wrobel
For Paludis use this rsync : rsync://gentoo.zugaina.org/wrobel-portage
If you have a problem : ycarus(-at-)zugaina.org