add DistURL to metadata

[lnussel]

(open)SUSE distributions use the disturl tag to store a link to the actual distribution sources used for building a package. Basically tells where the source rpm comes from, eg.

$ rpm -q --qf '%{DISTURL}\n' device-mapper
obs://build.opensuse.org/openSUSE:Maintenance:11561/openSUSE_Leap_15.1_Update/a00e7ff16d7ac559f427261934a55364-device-mapper.openSUSE_Leap_15.1_Update

So far this information is missing in repomd though. Any chance to add it?

[Conan-Kudo]

This is something I think may make some sense, as well as with BugURL (which Fedora uses to indicate where to file bugs for packages). Some discussion about what we should do here is required first, since changing RPM-MD is not exactly something that should be done lightly...

[Conan-Kudo]

@lnussel There's also the VCS tag, which might be more appropriate for your specific use-case. We've been considering using it in Fedora to map to our Dist-Git sources automatically for a while now.

[lnussel]

Whether or not another tag would be more appropriate doesn't really help as OBS uses DISTURL for more than a decade already. Changing that would be something for @mlschroe to consider.

[lnussel]

looking at the git history of those tags it looks like the VCS tag is meant to point at the upstream VCS so using DISTURL for the distro looks correct.