I don't know where Rust or Kotlin are heading, but C/WASM and Dart are already there today. I use Zig for the C/WASM part, it does cross compilation out of box

I don't know where Rust or Kotlin are heading, but C/WASM and Dart are already there today. I use Zig for the C/WASM part, it does cross compilation out of box. It's also a C compiler. It has built-in libc for Windows, macOS and Linux, and built-in wasi-libc. https://ziglang.org/ https://ziglang.org/