I use emacs exclusively for hacking Haskell, but I wanted to see if it's possible to connect to the shim server-process from vim and started working on omnicompletion:
http://shim.haskellco.de/trac/attachment/wiki/ScreenShots/vim-shim.png
http://shim.haskellco.de/trac/wiki/ShimVim
http://darcsweb.haskellco.de/darcsweb.cgi?r=shim;a=tree;f=/vim
I don't think I will spend much more time working on this, but if anyone wants to try it out or improve it, I would be happy to answer questions and review patches.
thanks, i too had been wondering about the "vim and" part of shim, especially about the interprocess communication. you're using vim's python embedding for that, but many vim users won't have python. more importantly: is that python solution (using unix sockets portable, ie, would it work for windows vim users if they were asked to install python for that purpose? claus