Having a non-deterministic version when you build is terrible. So don't do that. Having deterministic build dependencies is also a goal, but a different goal.

Having a non-deterministic version when you build is terrible. So don't do that. Having deterministic build dependencies is also a goal, but a different goal. Having a non-deterministic version, so you can easily upgrade all your dependencies and get the latest and greatest compatible version of everything, is great.