gistfile1.txt

*Foundation E> :{
*Foundation E| wat :: E.ExceptT () IO String
*Foundation E| wat = E.runExceptT $ do
*Foundation E|     liftIO iowat
*Foundation E| iowat :: IO String
*Foundation E| iowat = return ""
*Foundation E| :}

<interactive>:26:7: error:
    • Couldn't match type ‘Either e0 String’ with ‘[Char]’
      Expected type: E.ExceptT () IO String
        Actual type: E.ExceptT () IO (Either e0 String)
    • In the expression: E.runExceptT $ do liftIO iowat
      In an equation for ‘wat’: wat = E.runExceptT $ do liftIO iowat