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Re: Disappearing shim-signed after failed dist-upgrade

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On Tue 29 Jun 2021, at 22:41, Gareth Evans <donotspam@fastmail.fm> wrote:
> On Tue 29 Jun 2021, at 17:11, David Wright <deblis@lionunicorn.co.uk> wrote:
> > On Tue 29 Jun 2021 at 08:29:22 (+0300), Andrei POPESCU wrote:
> > > On Lu, 28 iun 21, 09:46:17, David Wright wrote:
> > > > 
> > > > But your evening run of   apt-get -y dist-upgrade   was unconstrained,
> > > > and so shim-signed could be removed because it was no longer being
> > > > held onto as a Depends or Recommends.
> > > 
> > > Except that `apt-get dist-upgrade` doesn't do that (`autoremove` does), 
> > > it only removes packages when it determines that it's needed to complete 
> > > the dist-upgrade, so a Conflicts or Breaks with an upgraded package.
> > 
> > So we can presume, perhaps, that it's a case of ranking:
> > shim-signed being installed as a Recommends is ranked lower
> > than upgrading shim-signed-common, and so it gets removed.
> > 
> > All my systems were upgraded successfully because I ignored
> > any arm64 bug reports, so all my lists and caches have been
> > refreshed since, and I don't have access to the control data
> > for shim-signed/1.33+15+1533136590.3beb971-7.
> > 
> > Perhaps others can make better informed guesses.
> > 
> > Cheers,
> > David.
> > 
> > 
> 
> I suspect "aptitude why shim-signed" may not remain relevant, but if so:
> 
> $ aptitude why shim-signed
> i   grub-efi-amd64-signed Recommends shim-signed
> 
> apt history shows grub-efi-amd64-signed was last upgraded along with 
> other grub* packages, apparently without issue, on 2021-03-03.
> 
> Even if I had made use of upgrade rather than dist-upgrade, presumably 
> a dist-upgrade would have been indicated here (by the existence of 
> packages kept back) and the same position would have resulted - ie. 
> having to wait for a potentially essential package to be made available 
> in upgraded form so it could be reinstalled so that it could be further 
> upgraded in future... no?
> 
> $ aptitude why shim-signed-common
> i   shim-signed Depends shim-signed-common (>= 1.36~1+deb10u2+15.4-5~deb10u1)
> 
> It seems the upgrade of shim-signed-common may have removed shim-signed.
> 
> Shouldn't essential packages involved in dependencies only ever be 
> available for upgrade together, unless perhaps the dependency >=version 
> remains satisfied?
> 
> Before succeeding in installing the newer version of shim-signed, I did 
> try installing the version originally installed with Buster, but apt 
> said it wasn't available.  In the end I didn't need to attempt 
> installing from eg. DVD, but couldn't this be impossible too due to 
> other conflicts?
> 
> In short, should a boot-related package ever be removed and not 
> replaced in the same upgrade operation?
> 
> Is it to be expected to have to keep an eye on this sort of thing?
> 
> Thanks all.
> Gareth
> 
> 

> having to wait for a potentially essential package to be made available 
> in upgraded form

That and related comments might not make sense.

I didn't explain there was a period when I couldn't (re)install shim-signed as apt install reported not found or something like that.  Thinking about it further after sending the above, I'm not entirely sure at what point I unpinned shim-signed, so will check logs and snapshots and rack brains and get back to you.

Thanks,
Gareth

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Thread

Disappearning shim-signed after failed dist-upgrade "Gareth Evans" <donotspam@fastmail.fm> - 2021-06-22 10:10 +0200
  Re: Disappearing shim-signed after failed dist-upgrade David Wright <deblis@lionunicorn.co.uk> - 2021-06-22 20:20 +0200
    Re: Disappearing shim-signed after failed dist-upgrade "Gareth Evans" <donotspam@fastmail.fm> - 2021-06-27 06:50 +0200
      Re: Disappearing shim-signed after failed dist-upgrade David Wright <deblis@lionunicorn.co.uk> - 2021-06-28 16:50 +0200
        Re: Disappearing shim-signed after failed dist-upgrade Andrei POPESCU <andreimpopescu@gmail.com> - 2021-06-29 07:30 +0200
          Re: Disappearing shim-signed after failed dist-upgrade David Wright <deblis@lionunicorn.co.uk> - 2021-06-29 18:20 +0200
            Re: Disappearing shim-signed after failed dist-upgrade "Gareth Evans" <donotspam@fastmail.fm> - 2021-06-29 23:50 +0200
              Re: Disappearing shim-signed after failed dist-upgrade "Gareth Evans" <donotspam@fastmail.fm> - 2021-06-30 04:30 +0200
              Re: Disappearing shim-signed after failed dist-upgrade David Wright <deblis@lionunicorn.co.uk> - 2021-06-30 05:50 +0200
              Re: Disappearing shim-signed after failed dist-upgrade Andrei POPESCU <andreimpopescu@gmail.com> - 2021-06-30 10:20 +0200

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