Resolving dependencies...
Downloading cap-1.0...
Configuring cap-1.0...
Building cap-1.0...
Preprocessing executable 'cap' for cap-1.0...

src/Language/Cap/Main.hs:1:1:
    Ambiguous module name `Prelude':
      it was found in multiple packages: base haskell98-2.0.0.2
Failed to install cap-1.0
cabal: Error: some packages failed to install:
cap-1.0 failed during the building phase. The exception was:
ExitFailure 1