Resolving dependencies... Downloading peparser-0.5... Configuring peparser-0.5... Building peparser-0.5... Preprocessing library peparser-0.5... Data/PE/Parser.hs:1:1: Ambiguous module name `Prelude': it was found in multiple packages: base haskell98-2.0.0.2 Failed to install peparser-0.5 cabal: Error: some packages failed to install: peparser-0.5 failed during the building phase. The exception was: ExitFailure 1