Where the .. does that echo come from?

[Clonk]

You could do something like this :
    
    
    template trace*(words: varargs[typed, `$`]) =
      echo getStackTrace()
      echo "=> ", words
    
    proc main() =
      trace "Hello, world !"
    
    
    
    
    Run

This will only work if you have the stacktrace in your build (see 
<https://nim-lang.org/docs/nimc.html#additional-features> for more info - 
otherwise -d:debug does the trick)