Such policies should be defined by the company, not enforced by the language. Even in static languages world, a lot of projects allow dev/nightly builds to be

Such policies should be defined by the company, not enforced by the language. Even in static languages world, a lot of projects allow dev/nightly builds to be unstable. Which is literally what you're talking about: checking in problems for everyone else. But checking in policy is a VCS/CI domain, not a language domain.