[Haskell-beginners] Install bullet-0.2.2 failure in OS X 10.8.2

Hi all, Any body can help me with installing bullet in OS X 10.8.2. I'm trying to install bullet using these commands: brew install bullet cabal update cabal install bullet And I got this Registering vect-0.4.7... Installed vect-0.4.7 Downloading bullet-0.2.2... Configuring bullet-0.2.2... cabal: The program c2hs is required but it could not be found. Failed to install bullet-0.2.2 Updating documentation index /Users/trungnguyen/Library/Haskell/doc/index.html cabal: Error: some packages failed to install: bullet-0.2.2 failed during the configure step. The exception was: ExitFailure 1 Thank you in advance. Kind regards, Trung