These ebuilds come from http://www.haskell.org/~gentoo/gentoo-haskell/.
If you have some problems, go to the official site first.
curry : Münster Curry Compiler ( http://danae.uni-muenster.de/~lux/curry/ )
ghc : The Glasgow Haskell Compiler ( http://www.haskell.org/ghc/ )
ghc-darcs : The Glasgow Haskell Compiler ( http://www.haskell.org/ghc/ )
helium : Helium (for learning Haskell) ( http://www.cs.uu.nl/helium )
hope : A lazy interpreter for the small functional programming language Hope ( http://www.soi.city.ac.uk/~ross/Hope )
hugs98 : The Hugs98 Haskell interpreter ( http://www.haskell.org/hugs/ )
jhc-darcs : jhc new experimental ebuild for experimental HASKELL compiler ;) ( http://repetae.net/john/computer/jhc/ )
yhc-darcs : A fast, portable Haskell compiler and interpreter ( http://www-users.cs.york.ac.uk/~ndm/yhc/ )
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