I can take only a small part of the credit since Dominik had already named his project/directory rrl for "Racket rogue-like." 
We also spoke about command line parsing in Racket. We got to the topic from this discussion thread, but also discussed command line parser approaches that aren't as imperative as in Racket's command-line function.
There's an SRFI-37, which has an implementation in Chicken Scheme (and maybe other Schemes). According to Racket's SRFI index there's no implementation for Racket. @countvajhula also mentioned his cli #lang for Racket.