It's definitely an issue for larger, coupled projects in 0.18 but don't let it scare you. The trick is to decouple your modules by focusing them on a single responsibility. Then the compile time is a non-issue.
The fact I have to do that shouldn't be necessary. I've been scarred by too many long compile time projects to know eventually entropy takes over despite the best of optimization efforts.
The fixes need to be in the compiler & dev tools itself, or it needs to be a very obscure feature or obviously surfaced build time problem highlighted by the compiler.
The fixes need to be in the compiler & dev tools itself, or it needs to be a very obscure feature or obviously surfaced build time problem highlighted by the compiler.