There is in fact no strict *technical* requirement for anything to
move from yum to dnf in F22. yum will remain in the F22 package set,
it is not being removed.
However, the Change seems to me to have been written with the basic
idea that yum shouldn't be installed by default any more and nothing
that's a core part of Fedora should use it any more - for e.g., the
Change incorporates moving anaconda to dnf, even though technically
speaking there's no *need* for this, we could if we wanted to ship F22
with anaconda using yum but the installed system using dnf.
So given that, I wanted to clarify the status of fedup.
If F22's fedup depends on yum, then people with 'clean' dnf-only
systems are going to get yum installed when they want to upgrade to
Aren’t there cases where yum and dnf resolve ambiguous dependencies differently? If so,
anaconda-installed and fedup-installed systems may end up with different packages, which
seems fairly undesirable. I suppose as long as fedup is part of the release criteria and
get tested there shouldn’t be huge surprises, but using the same mechanism for all of
(anaconda, fedup, post-install CLI, post-install GUI) seems like the ideal we should be
aiming for, not as an aesthetics matter but as a “technical requirement” to minimize the
testing matrix (for both individual packagers and distribution-wide QA).