Rustup arch only adds support for static libraries (unliked objects), and craps out as soon as you try to build a binary. Rust did not do the legwork that zig

Rustup arch only adds support for static libraries (unliked objects), and craps out as soon as you try to build a binary. Rust did not do the legwork that zig did to bundle libc and a working linker, and Cargo is exceptionally naive in its default configuration, so it won't even find a usable cross-linker on the system, nor even try the chronically-unfinished rustc-lld integration there is.