In the language proper, the Go authors have made very clear commitments about backward compatibility. (See https://golang.org/doc/go1compat https://golang.org/

In the language proper, the Go authors have made very clear commitments about backward compatibility. (See https://golang.org/doc/go1compat https://golang.org/doc/go1compat.) What's notable about this situation is seeing that their compatibility commitment extends only to the stuff inside the language, and not to the tooling provided to work with the language.