>If developers aren't going to change things given such a runway, would adding default deprecation warnings really make such a difference? I think many develop

>If developers aren't going to change things given such a runway, would adding default deprecation warnings really make such a difference? I think many developers don't pay attention to these things. If it compiles - they've turned off the warnings - then it's fine. What's needed is the use of a "--use-deprecated-features" flag in order for the code to run/compile successfully. People pay attention when they need to change the build script in order to keep doing it wrong. Sure, they'll keep doing it wrong, but now they'll know it's serious.