I worked on one privately back around 2014, then later picked up on some of this work: https://github.com/venantius/glojure https://github.com/venantius/glojure

I worked on one privately back around 2014, then later picked up on some of this work: https://github.com/venantius/glojure https://github.com/venantius/glojure, done by a friend of a friend. Neither one got anywhere useful. I more became convinced that to get to a useful place it would be necessary to generate (and compile) code and although Go has some of that tooling, I did not have the appetite to build with it. The Java implementation implementation is hard to read even for Java folks, it is more of how a C++ programmer would write Java, both in terms of syntax, and semantics.