Resolving dependencies...
Downloading HROOT-0.5.0.0...

/tmp/HROOT-0.5.0.0-21780/HROOT-0.5.0.0/Setup.lhs:7:10:
    Could not find module `Config'
    It is a member of the hidden package `ghc-7.6.3'.
    Use -v to see a list of the files searched for.
Failed to install HROOT-0.5.0.0
cabal: Error: some packages failed to install:
HROOT-0.5.0.0 failed during the configure step. The exception was:
ExitFailure 1