graphite2 : Library providing rendering capabilities for complex non-Roman writing systems ( http://graphite.sil.org/ )
graphviz : Open Source Graph Visualization Software ( http://www.graphviz.org/ )
imagemagick : A collection of tools and libraries for many image formats ( http://www.imagemagick.org/ )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a argent-main
For Paludis use this rsync : rsync://gentoo.zugaina.org/argent-main-portage
If you have a problem : ycarus(-at-)zugaina.org