This looks very interesting... What's the support like with Rails apps? If we'd had something like this it would have been a breeze (assuming it is 100% self contained like Go applications).
It’s super easy to build essentially static multi-platform tarballs—on my Mac—that just work in our Linux production environment.
The rb_to_exe never worked that great for me. I also tried Ocra, which works ok -- but the packages end up enormous.