[1 of 2] Compiling Main             ( <TEMPORARY-DIRECTORY>/Main.hs, <TEMPORARY-DIRECTORY>/.hdb-cache/<CACHE-ENTRY>/Main.gbc )[main]
(hdb) Aborted: <interactive>:1:1: error: [GHC-88464]
    Variable not in scope: isLetter
(hdb) 
(hdb) <fn> :: Char -> Bool
(hdb) True
(hdb) False
(hdb) Aborted: <interactive>:1:1: error: [GHC-87110]
    Could not find module `Does.Not.Exist'.
    Use -v to see a list of the files searched for.
(hdb) Exiting...