Resolving dependencies... Downloading cpphs-1.13... Configuring cpphs-1.13... Building cpphs-1.13... Preprocessing library cpphs-1.13... Language/Preprocessor/Cpphs.hs:1:1: Could not find module `Prelude' It is a member of the hidden package `base'. Perhaps you need to add `base' to the build-depends in your .cabal file. It is a member of the hidden package `haskell98-2.0.0.2'. Perhaps you need to add `haskell98' to the build-depends in your .cabal file. It is a member of the hidden package `haskell2010-1.1.1.0'. Perhaps you need to add `haskell2010' to the build-depends in your .cabal file. Use -v to see a list of the files searched for. Failed to install cpphs-1.13 cabal: Error: some packages failed to install: cpphs-1.13 failed during the building phase. The exception was: ExitFailure 1