unclutter : Hides mouse pointer while not in use. ( http://www.ibiblio.org/pub/X11/contrib/utilities/unclutter-8.README )
xkeyboard-config : X keyboard configuration database ( http://www.freedesktop.org/wiki/Software/XKeyboardConfig )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a chromiumos
For Paludis use this rsync : rsync://gentoo.zugaina.org/chromiumos-portage
If you have a problem : ycarus(-at-)zugaina.org