Resolving dependencies... Configuring atl-15321.1... Building atl-15321.1... Preprocessing library atl-15321.1... Control/Arrow/State.hs:9:8: Could not find module ‘Util’ It is a member of the hidden package ‘ghc-7.10.2’. Perhaps you need to add ‘ghc’ to the build-depends in your .cabal file. Use -v to see a list of the files searched for. Failed to install atl-15321.1 cabal: Error: some packages failed to install: atl-15321.1 failed during the building phase. The exception was: ExitFailure 1