[coldtea]

>Claiming that a language user should be prepared for certain parts of the language to disappear is a perfectly reasonable idea. But in practice it does not work

Well, it can. That's what you get when there's no official package and you depend on third party packages that change all the time (e.g. common in the Node ecosystem, in GTK+ land, etc.), or are abandoned, etc.

Compared to that, a scheduled, anticipated process for candidate packages to include in the language (or remove eventually) is much easier.