Resolving dependencies...
Downloading maccatcher-2.1.3...
Configuring maccatcher-2.1.3...
Building maccatcher-2.1.3...
Preprocessing library maccatcher-2.1.3...

Data/MAC.hs:1:1:
    Ambiguous module name `Prelude':
      it was found in multiple packages: base haskell98-2.0.0.2
Failed to install maccatcher-2.1.3
cabal: Error: some packages failed to install:
maccatcher-2.1.3 failed during the building phase. The exception was:
ExitFailure 1