[1 of 3] Compiling GHC.Debugger.View.Class ( in-memory:GHC.Debugger.View.Class, interpreted )[haskell-debugger-view-in-memory]
[2 of 3] 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:Ghci4

(hdb) Prelude.undefined

HasCallStack backtrace:
  undefined, called at <interactive>:1:1 in interactive:Ghci4

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