Resolving dependencies... Configuring hplaylist-0.1... Building hplaylist-0.1... Preprocessing executable 'hplaylist' for hplaylist-0.1... Main.hs:39:8: Could not find module ‘Config’ 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 hplaylist-0.1 cabal: Error: some packages failed to install: hplaylist-0.1 failed during the building phase. The exception was: ExitFailure 1