Resolving dependencies...
Downloading jack-0.5...

/tmp/jack-0.5-14138/jack-0.5/Setup.hs:6:8:
    Could not find module `System'
    It is a member of the hidden package `haskell98-2.0.0.2'.
    Use -v to see a list of the files searched for.
Failed to install jack-0.5
cabal: Error: some packages failed to install:
jack-0.5 failed during the configure step. The exception was:
ExitFailure 1