These ebuilds come from http://www.haskell.org/~gentoo/gentoo-haskell/.
If you have some problems, go to the official site first.
darcs-vim : vim plugin: Interactive interface to several darcs features from within Vim ( http://robotics.eecs.berkeley.edu/~srinath/darcs/index.php )
darcspatch-syntax : vim plugin: Syntax highlighting for darcs patches ( http://gentooexperimental.org/~shillelagh/ )
haskellindent : vim plugin: Indent settings and filetype detection for Haskell sources ( http://www.vim.org/scripts/script.php?script_id=1968 )
haskellmode : vim plugin: Provides IDE-like features for Haskell development ( http://www.cs.kent.ac.uk/people/staff/cr3/toolbox/haskell/Vim/ )
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