dnf replacing yum and dnf-yum

[Radek Holy]

----- Original Message -----
> From: "Tom Hughes" <tom at compton.nu>
> To: "Development discussions related to Fedora" <devel at lists.fedoraproject.org>
> Sent: Thursday, April 9, 2015 12:11:54 PM
> Subject: Re: dnf replacing yum and dnf-yum
> 
> On 09/04/15 11:10, Tom Hughes wrote:
> > On 09/04/15 10:30, Radek Holy wrote:
> >
> >>> On Wed, Apr 08, 2015 at 08:22:53 -0400,
> >>>    Radek Holy <rholy at redhat.com> wrote:
> >>>>
> >>>> AFAIK, YUM's --skip-broken does two things:
> >>>> 1) it selects another version of the requested package if the most
> >>>> suitable
> >>>> cannot be installed
> >>>> 2) it skips the requested package if none of its versions can be
> >>>> installed
> >>>>
> >>>> (2) was intentionally not supported in DNF so far but we have been
> >>>> repeatedly receiving bug reports complaining that this "feature" is
> >>>> missing. We have finally received a use case for it and thus we are
> >>>> considering an implementation as a plugin.
> >>>
> >>> Doesn't 2 apply if no package list is given for dnf update?
> >>>
> >>
> >> Hm, well, in case of upgrade some version of the given package is
> >> already installed so literally no (because the already installed
> >> version can be installed :-) ). But let's say that we both are correct
> >> because upgrade is kind of special in this case. We can think about
> >> changing the upgrade command to be consistent with the install command
> >> if there is a demand to do that but so far I'm fine with the current
> >> situation. I think that in case of upgrade, it's more common to ask to
> >> upgrade as much as you can while in case of install, users/scripts
> >> prefer to install everything or fail otherwise. Moreover I think that
> >> the change could annoy a lot of users.
> >
> > Sounds reasonable, but include distro-sync in the upgrade case please...
> >
> > That was one of the issues I ran into the other day, where I did
> > something like "dnf distro-sync b*" and if failed because one of the
> > installed packages which matched the wildcard didn't exist in any repo.
> 
> Hmm. Think I misread a bit what you were talking about, but my request
> still stands ;-)

Hm, I think that it depends on the use case. AFAIK, distro-sync is mostly used to upgrade Fedora (an unsupported approach AFAIK) and to replace some testing/3rd-party versions of package with the "official" ones. (BTW, I'd appreciate if anyone will share their use case) While in the first case, I think that the upgrade's behaviour is preferred, in the other case, the install's behaviour is better IMO. (Which dangerously indicates that the --skip-broken switch is a good solution :( )

Anyway, file an RFE (if it isn't filed already) please. We can track/discuss it there.

Thank you in advance
-- 
Radek Holý
Associate Software Engineer
Software Management Team
Red Hat Czech