mapnik-utils : Additional tools required to configure mapnik ( http://wiki.openstreetmap.org/wiki/Mapnik )
mapnik-world-boundaries : Mapnik World Boundaries ( http://wiki.openstreetmap.org/wiki/Mapnik#World%20boundaries )
openstreetmap : The Rails port is the current production version of OSM's server code - API, web front end and everything that runs on www.openstreetmap.org ( http://wiki.openstreetmap.org/wiki/The_Rails_Port )
osmosis : Commandline tool to process openstreetmap data ( http://wiki.openstreetmap.org/index.php/Osmosis )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a barzog-overlay
For Paludis use this rsync : rsync://gentoo.zugaina.org/barzog-overlay-portage
If you have a problem : ycarus(-at-)zugaina.org