We’ve been searching for a memory-safe programming language to replace C++ in Ladybird for a while now. We previously explored Swift, but the C++ interop never quite got there, and platform support outside the Apple ecosystem was limited. Rust is a different story. The ecosystem is far more mature for systems programming, and many of our contributors already know the language. Going forward, we are rewriting parts of Ladybird in Rust.
The worst part is they are doing themselves a disservice by not rewriting it by hand - have they really learnt enough Rust to know how to effectively rewrite the other parts of the engine as they say? Doubtful - they’ll probably just do everything through AI stuff going forward.