On Wed, 2015-01-28 at 10:38 -0500, Miloslav Trmač wrote:
> There is in fact no strict *technical* requirement for anything
> 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 F23.
Aren’t there cases where yum and dnf resolve ambiguous dependencies
Yes. dnf has nothing like yum's rather complex set of heuristics for
deciding this. https://bugzilla.redhat.com/show_bug.cgi?id=1183835
If so, anaconda-installed and fedup-installed systems may end up
with different packages, which seems fairly undesirable.
Well, they already do, for a couple of reasons; fedup doesn't do
distro-sync, retired packages not being properly obsoleted, anaconda
has never marked the groups it installs with yum's 'groups-as-objects'
mechanism so upgrading doesn't add and remove group packages as it
would if anaconda did.
I haven't actually done it, but I suspect that if you installed, say,
F19 Desktop then fedup'ed to F20 then fedup'ed to F21 Workstation
you'd wind up with quite a different package set than doing a clean
F21 Workstation install.
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
Agreed, reducing differences here as far as possible will always be a
good thing (which is another reason I'd like fedup to do distro-sync).
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