These ebuilds come from http://git.overlays.gentoo.org/gitweb/?p=dev/halcy0n.git;a=summary.
If you have some problems, go to the official site first.
ctags : Exuberant Ctags creates tags files for code browsing in editors ( http://ctags.sourceforge.net )
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