These ebuilds come from http://github.com/sjnewbury/multilib-overlay.
If you have some problems, go to the official site first.
graphviz : Open Source Graph Visualization Software ( http://www.graphviz.org/ )
gtkimageview : GtkImageView is a simple image viewer widget for GTK. ( http://trac.bjourne.webfactional.com/wiki )
imagemagick : A collection of tools and libraries for many image formats ( http://www.imagemagick.org/ )
sane-backends : Scanner Access Now Easy - Backends ( http://www.sane-project.org/ )
ufraw : RAW Image format viewer and GIMP plugin ( http://ufraw.sourceforge.net/ )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a multilib
For Paludis use this rsync : rsync://gentoo.zugaina.org/multilib-portage
If you have a problem : ycarus(-at-)zugaina.org