> No OS hosted repo can keep up with rust and it's particular selection of bleeding edge types.

Seems empirically false https://archlinux.org/packages/extra/x86_64/rust/

If your distro is unwilling to update a package with a single backwards-compatible minor version bump every 6 weeks, that’s a cultural issue, not a technical one. The “stability“ Debian imagines it gets from shipping a years-old compiler version instead of keeping up-to-date with non-breaking compiler updates is entirely mythical.

Pick a less sclerotic distro next time.