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I am a bit confused by their moving from C++ to Swift instead of Rust. It sounds a bit Apple-first. I get that it ports to Linux okay, but will it be hard to make it work with Windows some day?

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The main reasons were that Swift supports OOP and Rust doesn't (useful because web standards are object-oriented and it's easier to follow the specs when you can model them in your code), and that Swift supports C++ interoperability instead of just C interoperability like Rust (makes it easier to incrementally move to Swift in an existing C++ codebase).

Rust makes more sense if you were to start from scratch, but the Ladybird devs said that their code is already heavily OOP, so it maps to Swift a lot better.

Also, variety is good, we have Servo in Rust (although I wish they'd make an actual browser around it too).

Yeah I guess it's the same story as with the TSC port to Go

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