[Haskell] Re: Visual Haskell: Could not find module `Control.Monad.Writer'

Ben Rudiak-Gould Benjamin.Rudiak-Gould at cl.cam.ac.uk
Wed Mar 1 19:05:02 EST 2006

Replying to an old thread...

Bernd Holzmüller wrote:
>     Could not find module `Control.Monad.Writer':   use -v to see a list
> of the files searched for

I just installed Visual Haskell and ran into the same problem, and the 
solution I found was to right click on "References" in the project and add 
the mtl package.

I also had to add the haskell98 package to get Happy-produced source code to 
work (even though Happy was called with --ghc).

-- Ben

More information about the Haskell mailing list