I did have a look at bevy ECS approach and find it very verbose and really foreign, it’s in « not rust anymore» territory. Macros are a dangerous tool in terms of long term maintainability and are hurting compilation times.
But it’s still really fresh, they are conscious of the issues and I hope bevy maintainers came up with an elegant design
Right. Bevy has its own run time allocation and dependency system, and it's <<not rust anymore>>. It bypasses Rust's compile time ownership system using unsafe code. The encapsulation may be safe due to run time checking. It's bothersome that such things seem to be needed.