These ebuilds come from http://arcong.ath.cx/.
If you have some problems, go to the official site first.
xfce4-macmenu-plugin : XFCE4 Macmenu Plugin ( http://aquila.deus.googlepages.com )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a zugaina
For Paludis use this rsync : rsync://gentoo.zugaina.org/zugaina-portage
If you have a problem : ycarus(-at-)zugaina.org