The latest cabal documentation[1] indicates that I should be able to 

    $ runhaskell Setup makefile

to generate a Makefile from the cabal file. When I try running this command I get the following:

Is this command available on some version of cabal? I'm using 1.8.0.2 of the library.

    $ cabal --version

Thanks!

[1]: http://www.haskell.org/cabal/release/cabal-latest/doc/users-guide/builders.html#setup-makefile