Language designers have every right to avoid complex features if such a feature impede the language in any way.

Hare does the smart thing - it decouples the library distribution model from the language.

After all, it's the programmers job to make sure that distribution and packaging of his/her library is as simple as possible.

Every programmer should not be re-solving the problem of library distribution just to distribute their library. This is a solved problem; a go-style git repository model is the bare minimum that a language should have.