Could we advice the dnf5 what are the available repository fallbacks?

[praiskup]

At this point in time, dnf5 copr enable implements the fallback mechanism itself:
https://github.com/rpm-software-management/dnf5/blob/117bc3e552147925ac469179d4c8f79f06a1eaca/dnf5-plugins/copr_plugin/helpers.cpp#L8-L15

This is much better than with dnf4 variant, where we had to decide server-side (copr-frontend), and we didn't have good enough information about the client machine (is that Alma? is that CentOS Stream? RHEL? What user prefers?).

I'm curious if we could provide some "hint" like info in the /api_3/rpmrepo/<owner>/<project>/ call, saying that some chroots are good enough fallbacks for other chroots (like that epel-10 is a good fallback for rhel+epel-10 and vice versa).
Maybe let the Copr owner decide it.

[praiskup]

Relates to #3469

[FrostyX]

Sounds good. Maybe we can even interactively prompt the user when enabling, to specify what alternative he wants?

Maybe let the Copr owner decide it.

IMHO probably not