I see in the list archives that someone posted this problem a few weeks ago, but there wasn't a response. So, let me confirm I'm having it too. I installed the haskell platform on windows and then used cabal to install c2hs. It put a binary called "c2hs.exe" in "C:\Program Files\Haskell\bin", which appears to be on my path. However, when I go to build some software I've written that uses c2hs, cabal gives me this error: c2hs.exe: does not exist My package builds fine in linux. The computer I'm at now is running windows xp, service pack 2. I can try it out on a windows 7 computer tomorrow if that would be helpful. This is my first attempt to build Haskell software on windows, so it's conceivable I'm doing something silly. Thanks in advance for your help. --Chris Casinghino