[1 of 2] Compiling Main             ( <TEMPORARY-DIRECTORY>/Main.hs, interpreted )[main]
(hdb) 1
(hdb) 1
(hdb) Prelude.undefined

HasCallStack backtrace:
  undefined, called at <interactive>:1:1 in interactive:Ghci3

(hdb) Prelude.undefined

HasCallStack backtrace:
  undefined, called at <interactive>:1:1 in interactive:Ghci3

(hdb) _
(hdb) [...]
(hdb) Exiting...