iirc I wanted to port it to Guile originally but there was one major bug in Guile R7RS support that was stopping me. I think it was something about the way imports were named. I submitted an issue but it languished for at least half a year, I think because the dev in charge of that part of the code was busy with something else and not actively working on Guile. I haven't looked at the issue in a couple years, maybe it's fixed now.

And thanks!

(edit: I looked it up, they merged my fix for the bug in May 2021, maybe supporting Guile would be feasible now? https://debbugs.gnu.org/cgi/bugreport.cgi?bug=40252)