C++ modules has been promised for a long time, I wouldn't hold my breath on it coming anytime soon. As for build times, it is sadly very easy in C++ to have lo

C++ modules has been promised for a long time, I wouldn't hold my breath on it coming anytime soon. As for build times, it is sadly very easy in C++ to have long build times. Avoiding it takes careful work, knowing when and what to include, when to forward-declare instead, and always maintaining includes as requirements change, etc. There's nothing to make that process any easier or automatic, which is very frustrating. There's the include-what-you-use project, but I could never get it to work.