[Haskell-cafe] mtl and transformers

Martijn van Steenbergen martijn at van.steenbergen.nl
Mon Jan 11 04:03:09 EST 2010

Günther Schmidt wrote:
> Hi,
> when I cabal-installed the iteratee package, the transformers package 
> was also installed as a dependency.
> Now when I run applications that import Control.Monad.Transformers I get 
> this:
>     Could not find module `Control.Monad.Trans':
>      it was found in multiple packages: transformers- mtl-

Another solution is to build your applications using Cabal and specify 
your dependency on mtl in the cabal file.



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