[racket] how to get line numbers on syntax errors on load?

>> Is there a way to coerce racket to be more specific in its messages?

Although I don't know if it would do better with this particular error,
generally errortrace gives much better stack traces:

  http://docs.racket-lang.org/errortrace/quick-instructions.html

It does so by instrumenting the code. Which means it will run more
slowly. Which I imagine is why it's not enabled by default.