It's an interesting idea, and one python has sort of used for a while with wheels (pre-compiled binary packages for specific architecture/OS combinations). For

It's an interesting idea, and one python has sort of used for a while with wheels (pre-compiled binary packages for specific architecture/OS combinations). For Rust, they could potentially cache the MIR or even a higher level LLVM IR, but perhaps those formats are too unstable or end up extremely complicated.