Running C debugger on extra C sources in Haskell program

extra.c

#include <stdio.h>
void do_c_thing(int x) {
    printf("Hello there from C! %d\n", x);
}

Main.hs

module Main where

foreign import ccall unsafe "do_c_thing" do_c_thing :: Int -> IO ()

main = do
  do_c_thing 5

result.txt

$ ghc Main.hs extra.c -g -optc-g
$ lldb -- ./Main
(lldb) target create "./Main"
Current executable set to '<PATH>/Main' (arm64).
(lldb) b do_c_thing
Breakpoint 1: where = Main`do_c_thing + 16 at extra.c:3:40, address = 0x000000010000bcfc
(lldb) run
Process 34598 launched: '<PATH>/Main' (arm64)
Process 34598 stopped
* thread #1, queue = 'com.apple.main-thread', stop reason = breakpoint 1.1
    frame #0: 0x000000010000bcfc Main`do_c_thing(x=5) at extra.c:3:40
   1    #include <stdio.h>
   2    void do_c_thing(int x) {
-> 3        printf("Hello there from C! %d\n", x);
   4    }
Target 0: (Main) stopped.
(lldb)