@pemensik can you reuse the spec file from the Fedora package and edit it with sed in .packit.yml if necessary (by analogy with what avahi, dbus-broker and so on do) and remove pkg/rpm-fedora/nss-mdns.spec? There is no need to keep and maintain downstream things upstream.

No, I think upstream included copy does not hurt and it will make it simpler to create the package via packit or help any rpm distribution to start their own package. I made it simple enough to not require further changes on every update. Nothing packit could not handle at least. I think one rpm template does not hurt. Especially when we have to remove things from fedora package spec, it is no longer simple. But that is hidden in .packit.dev file instead of visible file.

I prefer it the way I used.

upstream included copy does not hurt

Dunno. It kind of opens that door where downstream stuff ends up being offloaded onto upstream projects. That's probably how the avahi repository ended up with a bunch of downstream-specific scripts nobody actually maintains and tests downstream because it's probably assumed that they are maintained upstream (which they aren't of course).

help any rpm distribution to start their own package

I'm not sure why it would be necessary but by this logic it would make sense to cover deb-based distros as well.

Then again it's not something that should be kept upstream.

(FWIW since it's upstream now it should come with the SPDX IDs and stuff like that)