I'm the guy who started doing Godbolt support. I don't have anything published yet, but, I got very basic support working, but unfortunately I have stalled on progress. Not because of Nim, but because godbolt has some "quirks"... It's more javascript hacking than Nim hacking...
I do hope to get back to it soon (famous last words). I can describe in more details the issues I am having and put my unfinished godbolt fork up on github if there is interest.
