flatten (k, FromDynFlags f) = (k, f dflags)
showSupportedExtensions :: IO ()
-showSupportedExtensions = mapM_ putStrLn supportedExtensions
+showSupportedExtensions = mapM_ putStrLn supportedLanguagesAndExtensions
showVersion :: IO ()
showVersion = putStrLn (cProjectName ++ ", version " ++ cProjectVersion)