tkz-berge : This is a sample skeleton ebuild file ( http://altermundus.com/pages/graphtheory.html )
tkz-graph : tkz-graph is a set of convenient macros for drawing graphs ( http://altermundus.com/pages/graph.html )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a xhub
For Paludis use this rsync : rsync://gentoo.zugaina.org/xhub-portage
If you have a problem : ycarus(-at-)zugaina.org