That is not an explicit design goal, because we feel that would be too restrictive -- we may even diverge semantically. We are in fact working on compilers for the language that don't involve going through Racket (though Racket is so awesome, it's not a given that this will be any better -- these are all just experiments in progress). But without Racket's #lang, which is absolutely a rock star language creation mechanism, Pyret probably wouldn't exist.

In short, though, sorry, we can't commit to helping you interop with your existing Racket code. But you're already in Racket, so life is probably as good as it's ever going to get. (-: