Does any rust dev or package maintainer has found a viable approach to downstream patch management? E.g. Arch, Fedora, Alpine and probably most others use diff patches along with the "package recipe", as this allows maintaining everything in one place.

E.g. rust package foo depending on crate bar: If there is a patch for foo, diffs work fine. But what if I need to patch bar? Note that patching in a `[patch.crates-io]` entry is manageable, having that point to a repo is not.

#rustlang #distro