Resolving dependencies...
Configuring hplaylist-0.2...
Building hplaylist-0.2...
Failed to install hplaylist-0.2
Build log ( /home/builder/.cabal/logs/hplaylist-0.2.log ):
cabal: Entering directory '/tmp/cabal-tmp-14475/hplaylist-0.2'
Configuring hplaylist-0.2...
Building hplaylist-0.2...
Preprocessing executable 'hplaylist' for hplaylist-0.2...
[1 of 5] Compiling Flags            ( Flags.hs, dist/build/hplaylist/hplaylist-tmp/Flags.o )

Flags.hs:9:12: warning:
    accepting non-standard pattern guards (use PatternGuards to suppress this message)
        Just p <- getTempDir fs
[2 of 5] Compiling Utils            ( Utils.hs, dist/build/hplaylist/hplaylist-tmp/Utils.o )
[3 of 5] Compiling Debug            ( Debug.hs, dist/build/hplaylist/hplaylist-tmp/Debug.o )
[4 of 5] Compiling Applescript      ( Applescript.hs, dist/build/hplaylist/hplaylist-tmp/Applescript.o )
[5 of 5] Compiling Main             ( Main.hs, dist/build/hplaylist/hplaylist-tmp/Main.o )

Main.hs:41:1: error:
    Failed to load interface for ‘Config’
    It is a member of the hidden package ‘ghc-8.0.1.20161018’.
    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.
cabal: Leaving directory '/tmp/cabal-tmp-14475/hplaylist-0.2'
cabal: Error: some packages failed to install:
hplaylist-0.2 failed during the building phase. The exception was:
ExitFailure 1