On Wed, Jan 20, 2021 at 3:23 AM Kevin Kofler via devel
<devel@lists.fedoraproject.org> wrote:
>
> Daniel P. Berrangé wrote:
>
> > On Tue, Jan 19, 2021 at 03:18:41PM +0000, Richard W.M. Jones wrote:
> >> On Tue, Jan 19, 2021 at 04:12:59PM +0100, Miro Hrončok wrote:
> >> > On 19. 01. 21 16:06, Richard W.M. Jones wrote:
> >> > >(2) Or adding:
> >> > >
> >> > >%package tar-filter
> >> > >Obsoletes: %{name}-tar-plugin <= %{version}-%{release}
> >> > >
> >> > >which says that it obsoletes but doesn't provide a replacement. Note
> >> > >however I'm not sure if this will work, because they won't have
> >> > >nbdkit-tar-filter installed before the upgrade (it never existed in
> >> > >F32), so will the Obsoletes ever be "seen" by dnf?
> >> >
> >> > Yes, it will be seen and respected.
> >> >
> >> > Note that it in most cases, it is recommended to obsolete a specific
> >> > version-release rather than %{version}-%{release}.
> >>
> >> To be clear, I would find the last released nbdkit-tar-plugin version
> >> in F32 (https://koji.fedoraproject.org/koji/buildinfo?buildID=1605446)
> >> and write this?
> >>
> >> %package tar-filter
> >> Obsoletes: %{name}-tar-plugin = 1.20.7-1.fc32
> >
> > Yes, but use <= here, rather than =, as users might be updating from an
> > older install.
> >
> > Arguably can leave off the .fc32 part too IMHO.
>
> But then, <= 1.20.7-1 will do the wrong thing, which is why Miro recommends
> (and I agree with him) to use < 1.20.7-2 instead.
Yes. This is also in line with the Packaging Guidelines, where there's
a good description of this scenario:
https://docs.fedoraproject.org/en-US/packaging-guidelines/#renaming-or-replacing-existing-packages
Fabio
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