[bmitc]

It works for Schemes that DrRacket supports or ones implemented via #lang. I don't think Chez Scheme is one of those.

[rscho]

There's actually a plugin that lets one use Chez directly from DrRacket.

[bmitc]

Got a link?

[rscho]

I used the plugin to run the Chez version of minikanren some time ago. I think it was this one:

https://github.com/Syntacticlosure/chez-runner

There might be more on the racket package server.