Re: release and updates repos on rawhide

I regularly see reports that RPM Fusion or Livna repositories are not working; the error reports contain output like this (obviously taken from a livna report; but I've seen similar reports for RPM Fusion already): > http://rpm.livna.org/fedora/9.93/i386/repodata/repomd.xml: [Errno 14] HTTP Error > 404: Not Found > Trying other mirror.

What's wrong here? Well, the answer is simple: The user is running rawhide (relver is 9.93 there right now), but he has those the repos enabled that you should use when you are running a stable Fedora release (e.g. rpmfusion-{non,}free{-updates}) instead of RPM Fusion's rawhide repos. IOW: the user configured something wrongly, but he thinks it's our fault(¹). That afaics happens so often that I started to wonder: Is there anything we can do to prevent the problem at all? Or a way to make it easier for users to do the right thing? Putting a symlink in place that points to the development repos might circumvent the problem (but maybe yum gets confused if it sees the exact same repodata twice; and worse: I fear that mirrormanager will get confused/needs changes as well). Does anyone have a better idea to prevent that users don't run into this trouble?