Huh, I kinda thought something like this was already being done, but perhaps it was a bit later stage. Neat!

A kind of related shower thought I had, could rustc not instantiate generic methods, but write out what it expects to find (std::Vec<String>::push), and a separate build process listens to these, but makes sure already built ones are not built multiple times from the whole build.

I don’t actually know how much of duplication there usually is, but I had gotten the impression that it would be part of the problem.

Of course I’m no compiler engineer, and I’m sure there are complications like per crate build profiles, etc.