[zaphirplane]

> make no effort in maintaining compatibility at the language level

There is the Xcode migration which auto updates source code to the new version, which I’m sure you are aware of and leaves you annoyed. Thou it’s more than “no effort”

[littlestymaar]

There's tooling, that's right but I was refering to some kind of language stability commitment (like the one Rust has for instance). I find it surprising that there are language constructs made to help libraries being forward compatible (and that Swift is a leader in that domain), while the language itself is way less stable than most languages (which doesn't shock me since it's still pretty recent, and has really ambitious goals which are understandably hard to achieved on the first try).