I don’t read it as requiring production software for end-user applications requiring specific languages. I think I’m correct in assuming that the OS level calls

I don’t read it as requiring production software for end-user applications requiring specific languages. I think I’m correct in assuming that the OS level calls, bindings, and built ins will only be provided with approved and supported APIs for the approved languages. I also think that’s what the GP comment was saying. I think the result will be language specific shim layers that are required by language/implementation maintainers. But I’m just making a guess. Edit: had I read the quote from a comment not far below before posting, I would not have made these assumptions. That quote does sound like applications will be language restricted.