There are enough people who care about adding zig to existing projects being easy (including the zig BDFL) that I would hope that this approach won't be stabilised until they're confident that it isn't adding enough extra complexity to spoil the experience.

I mean, we'll have to wait and see, and there may be a transition period during which things kinda suck, but zig has a pretty good track record here so I'm more optimistic than I would be in most cases.