It's a tough problem, because the situations in which fast build times matter are mostly during local development and test. Only at really insane scales do they

It's a tough problem, because the situations in which fast build times matter are mostly during local development and test. Only at really insane scales do they become a problem for production releasing and CI/automated testing. An environment variable that can be set on a dev workstation globally (and overridden with CLI flags) would probably be sufficient for opt-in