I was actually using submissions as a poor man’s substitute for HN search :)

I found the tutorial ( http://felix-lang.org/web/tutorial.fdoc ) to be a bit info sparse when I had no clue what I was looking at. Once I’d poked a round a bit it was much better, and started answering questions I was having - mainly how FFI is handled: http://felix-lang.org/web/nutut/intro/intro_01.fdoc

A very cool project.