Yes that appears to be the case. If you run the single file example in the README it will add a directory called "crystalruby" with generated source code in it

Yes that appears to be the case. If you run the single file example in the README it will add a directory called "crystalruby" with generated source code in it. So it looks like you could easily check that in with your gem. I don't actually see any object code in the directory but this is a new project so they may not cache that yet but I don't see why they couldn't in future. e.g. as a build step when installing a gem. This seems to be a fantastic bit of work so far with a lot of potential for the future.