These ebuilds come from http://git.overlays.gentoo.org/gitweb/?p=dev/lu_zero.git;a=summary.
If you have some problems, go to the official site first.
qemu-neo1973 : Openmoko patched qemu snapshot ( http://wiki.openmoko.org/wiki/Openmoko_under_QEMU )
systemsim-cell : Full-System Simulator for the Cell Broadband Engine Processor ( http://www.alphaworks.ibm.com/tech/cellsystemsim )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a lu_zero
For Paludis use this rsync : rsync://gentoo.zugaina.org/lu_zero-portage
If you have a problem : ycarus(-at-)zugaina.org