Thanks for the report.
Fedora 30 had several dnf-related updates today. Since then, mock
fails
with KeyError: 'yum.conf'
Yes, we started using `dnf.conf` for configs where `package_manager = dnf`.
But this was unfortunate thing, it led to several bugreports. New release
of Mock is comming with the following fix:
https://github.com/rpm-software-management/mock/pull/486
After that, mock won't care whether you use `dnf.conf`, `yum.conf` or mix.
Sorry for inconvenience,
Pavel
> In the mockbuild directory, /var/lib/mock/Fedora.../root/etc/yum.conf is a
> link to yum/yum.conf, which is a 0 byte file.
>
> In the corresponding file for epel-7 builds, last used before the
> updates, yum/yum.conf is 3.2 kB
>
> In the F30 host /etc/yum.conf is now 816 bytes
>
> Perhaps I should try to revert.
>
> John P