The author had everything in one package. The package is the real compilation unit. The author claimed that this is the only way to use go because you can't h

The author had everything in one package. The package is the real compilation unit. The author claimed that this is the only way to use go because you can't have circular deps. Well, this is where structurally-typed interfaces come in to play -- you shouldn't have a circular dependency, it is just that your interfaces need to be compatible. For instance, each of the parts of the standard library is its own package... there is no circular dep on the "reader" interface, things just implement Read() and it "just works" (and is enforced by the compiler at link time.) Having 700 files in one package is an abuse of api.