I don’t recall what the default behavior is with the linker, but it might also benefit from at least thin LTO.

projects/[rust|cpp|python|..]/proj-name

I actually came in here to post just that. It’s something that, while I’ve vaguely known, is not something I typically remember to do - I’m usually returning or collecting Vecs all over. I shall be now diligent & intentional from now on.