I created a cvs ebuild for mlview because I work on it, and it's worked fine until schemas installation. Genome (http://forums.gentoo.org/viewtopic.php?p=626411) adviced me to add this ebuild in Portage tree, as, Gnome developper could help me. For the moment I had Sandbox violation when the ebuild tries to install gconf schemas in /etc/gconf, so mlview install is not completed. Thanks for your help
Created attachment 20232 [details] the ebuild
sorry, but we don't feel that we should be supporting cvs ebuilds of packages that have stable versions available. as for your sandbox problems, you should have a look at the mlview already in app-text/mlview and especially at the gnome2.eclass.
submit this ebuild (fixed version) to breakmygentoo.net