Prelude in 7.4.0.20111219

[Serge D. Mechveliani]

Dear GHC developers,

This is on  ghc-7.4.0.20111219.
Compiling  

---------------------------------------------------
{-# OPTIONS -fno-warn-duplicate-exports #-}
module DExport
  (module DPrelude,    module Categs,     module SetGroup,
   module RingModule,  module Z,          module DPair,
   module Fraction,    module Permut,     module VecMatr,
   module Pol,         module Residue,    module LinAlg,
   module GBasis,      module Partition,  module AlgSymmF,

   module Complex,
   module Prelude, module List, module Ratio, module Random
  )
where
import Complex
import List    hiding (minimum, maximum, sort, sortBy)
import Prelude hiding (minimum, maximum,             )
import Ratio
...
---------------------------------------------------


ghc-7.4.0.20111219  reports (unlike ghc-7.0.1):

----------------------
runghc Setup.hs build
Building docon-2.12...
Preprocessing library docon-2.12...

DExport.hs:26:8:
    Ambiguous module name `Prelude':
      it was found in multiple packages: base haskell98-2.0.0.1
----------------------

Please, what is the best way out?
Regards,

------
Sergei
mechvel at botik.ru