> But TBH, in 0.15 only zig build broke IIRC. However, I just didn’t happen to use some of the things that changed, I believe.

I idle on IRC a lot, and try to help out with questions. From that view, this is the experience of over 90% of users. Minor namespace changes, or calling a function with a different named option. . root_source_file became . root_source_module (and required an additional function call)

Complex changes are almost never required, and IMO shouldn't be expected by most people using zig. Those who might need to make them, already know they're coming because they're already paying attention to the language as a prerequisite for writing such complex code. (Complex here meaning depending on the more esoteric zig stdlib internals)