These ebuilds come from http://www.pkgcore.org/~ferringb/.
If you have some problems, go to the official site first.
unladen-swallow : Python is an interpreted, interactive, object-oriented programming language. ( http://www.python.org/ )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a ferringb
For Paludis use this rsync : rsync://gentoo.zugaina.org/ferringb-portage
If you have a problem : ycarus(-at-)zugaina.org