On Wed, 2017-04-05 at 07:17 -0700, stan wrote:
> On Wed, 05 Apr 2017 12:03:51 +0100
> Ankur Sinha <sanjay.an...@gmail.com> wrote:
> 
> > Hello,
> > 
> > I was looking to upgrade my machine to F26 using dnf system-upgrade. I
> > got a conflict or two and was wondering if this is a known issue and
> > whether it is OK to proceed?
> > 
> > > > [asinha@cs-as14aho-2-herts-ac-uk  ~]$ sudo dnf system-upgrade
> > > > download
> > > > --releasever=26                                                         
> > > >                                                                         
> > > >                          
> > > 
> > > Failed to synchronize cache for repo 'rpmfusion-nonfree-updates',
> > > disabling. Failed to synchronize cache for repo
> > > 'rpmfusion-free-updates', disabling. Last metadata expiration
> > > check: 0:00:18 ago on Wed Apr  5 11:59:31 2017. Error: nothing
> > > provides nss(x86-64) >= 3.29.3 needed by
> > > java-1.8.0-openjdk-headless-1:1.8.0.121-10.b14.fc26.x86_64. nothing
> > > provides nss >= 3.29.3 needed by firefox-52.0-7.fc26.x86_64.
> > > problem with installed package lz4-1.7.5-1.fc25.i686. nothing
> > > provides nss(x86-32) >= 3.29.3 needed by
> > > java-1.8.0-openjdk-headless-1:1.8.0.121-10.b14.fc26.i686. nothing
> > > provides nss(x86-64) >= 3.29.3 needed by
> > > java-1.8.0-openjdk-headless-1:1.8.0.121-10.b14.fc26.x86_64 (try to
> > > add '--allowerasing' to command line to replace conflicting
> > > packages) 
> 
> My interpretation of that output is that package lz4-1.7.5-1.fc25.i686
> is blocking the update.  It somehow creates a dependency chain that
> doesn't allow nss to update, and so the rest follows.
> 
> You could try removing that package, and then running the
> system-upgrade again.  Reinstall it after the system-upgrade completes
> if it is still available in F26.

No, that's wrong. An nss update which several other packages had
already rebuilt again was unpushed a couple of days ago, which caused
many dependency issues like this. It's since been re-pushed, and when
the nightly compose that just completed (20170405.n.0) syncs out to
mirrors the problem should be resolved.
-- 
Adam Williamson
Fedora QA Community Monkey
IRC: adamw | Twitter: AdamW_Fedora | XMPP: adamw AT happyassassin . net
http://www.happyassassin.net
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