Can a Linux derivative OS comparable to macOS be written in Rust?

Rust appears to be safe and cool language, many discussions going on about rewriting existing parts of kernels like bootloaders to make them memory safe, etc. Is Rust a good candidate to write an OS like Mac OS? AFAIK, there are two aspects to such an OS - it should be super smooth and performant, and secondly, it should be able to expose a sophisticated toolchain and SDK to create apps, much like Swift/Cocoa for Mac. Can Rust do both as of now? Can the Rust-GTK combination, as mentioned here: https://bit.ly/3VHwkcE, enable creation of beautiful and performant apps like Mac OS apps? And can it expose an SDK and toolkit as sophisticated as Cocoa/Swift/Clang for developers to do their jobs easily?