Márton BraunHot take (?): for a significantly easier time, schedule your AGP 9 upgrades for about two months from now.
There'll be a lot more materials and samples available to help you, and various issues will have been fixed by then.
Johannes Ptaszyk@zsmb13 I think we mainly faced issues with 3rd party Gradle Plugins etc.
So everyone should make sure to open GitHub Issues etc. For 3rd parties ☺️