From email:

* Sergey Kolosov:

> The second test fails on /install /update /downgrade /remove phases,
> because it can't install(update/downgrade/remove) glibc-headers-s390-
> 0:2.33-5.el9.noarch because of conflicted files between glibc-headers-
> s390 and glibc-headers-x86 [2] I guess glibc-headers-s390 can't be
> installed in same time with glibc-headers-x86, so should I reach #osci
> to fix osci.brew-build.installability.functional test?

Hmm.  This came up recently here:

  <https://pagure.io/releng/issue/8337#comment-713404>

The side effects from those noarch packages are quite bad as well.
Someone needs to follow up with Kevin Fenzi and Lubomír Sedlář to check
if the infrastructure issues we were trying to work around have been
fixed, than we can revert this construct on the glibc side [in Fedora[.

In RHEL 9, we never saw these issues, so we can do this change downstream
after inheritance from Fedora 34 has stopped, in CentOS Stream 9.
This way, the second problem should go away in early April.