installLib _ _ _ _ _ PackageDescription{library=Nothing}
    = die $ "Internal Error. installLibGHC called with no library."
installLib _ _ _ _ _ PackageDescription{library=Nothing}
    = die $ "Internal Error. installLibGHC called with no library."
installLib _ _ _ _ _ PackageDescription{library=Nothing}
    = die $ "Internal Error. installLibGHC called with no library."