A couple of days ago, I released north, a database schema migration tool written in Racket. It currently supports PostgreSQL and SQLite, but new adapters are extremely easy to add and my main reason for building it was because I wanted not only a CLI utility but also programmatic access to do migrations from Racket. I'm going to make that last part easy for everyone with the next release after I clean up some of the internals and write more docs.
If you do check it out, let me know what you think!