These ebuilds come from http://sabayon.org.
If you have some problems, go to the official site first.
imx-lib : IMX{31,51} System library ( https://github.com/genesi/imx-lib )
libuser : The libuser library implements a standardized interface for manipulating and administering user and group accounts. ( https://fedorahosted.org/libuser )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a sabayon
For Paludis use this rsync : rsync://gentoo.zugaina.org/sabayon-portage
If you have a problem : ycarus(-at-)zugaina.org