Rash is excellent. I use it in production for a process that copies large parquet files on the daily by shelling out to the aws command, then processes them by shelling out to another command and then pushes the processed data over HTTP to another server using a Racket HTTP client[1]. My only complaint would be that the docs could use some cleaning up.

[1]: https://docs.racket-lang.org/http-easy/index.html