Could iteratee depend on mtl instead of transformers?

[Valery V. Vorotyntsev]

> Valery V. Vorotyntsev wrote:
>
>> Is there a way to tell GHCi ``Take Control.Monad.Trans from mtl
>> package for this session'' or ``Use transformers this time'' without
>> updating ghc-pkg config file (hide/expose)?


Henning Thielemann wrote:

> With 'ghc-pkg hide' and 'expose' you can set your general preference. With
> '-hide-package mtl' and '-package transformers' you can choose per
> invokation of GHCi.


``When you say import A.B.C, from what package does A.B.C come?''

I've found [*] a hackage wiki page devoted to this question:
  http://hackage.haskell.org/trac/ghc/wiki/GhcPackages#Theopenquestion


  [*] I just tried to add `-hide-package mtl' to OPTIONS_GHC pragma,
      with no success, and was googling for a clue.

    Prelude> :load "/home/vvv/job/cdr.mscp/Codec/Binary/MSCP.hs"
    /home/vvv/job/cdr.mscp/Codec/Binary/MSCP.hs:1:15-39:
        unknown flag in  {-# OPTIONS #-} pragma: -hide-package
    /home/vvv/job/cdr.mscp/Codec/Binary/MSCP.hs:1:15-39:
        unknown flag in  {-# OPTIONS #-} pragma: mtl
    >

-- 
vvv