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Re: question about apt upgrade facing locally build packages

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On Sat, 16 Nov 2024, tomas@tuxteam.de wrote:

> On Sat, Nov 16, 2024 at 11:53:25AM -0600, David Wright wrote:
>> On Sat 16 Nov 2024 at 15:54:17 (+0100), tomas@tuxteam.de wrote:
>>> On Sat, Nov 16, 2024 at 03:11:37PM +0100, Patrice Duroux wrote:
>>>>
>>>> On Sid, building and installing locally modified packages for testing
>>>> at the same version as in the archive, I am surprised that apt upgrade
>>>> will reinstall any of those installed by the one from the archive. I
>>>> did not remember such a "feature" in the past, unless my memory plays
>>>> tricks on me:-).
>>>
>>> I think you should change the package version (and thus the name) if you
>>> make local changes. ISTR that I added some ~local0 suffix. Then you can
>>> talk to your package manager about it (e.g. pinning,etc.)
>>
>> I found adding an epoch number was the simplest surefire method, as:
>> . it's the most significant field in the version number,
>> . you can leave the version number unchanged as an indication
>>   of the unmodified source,
>> . a descriptive suffix is fine, but no help against upgrades.
>
> I was in this deliberation too, and came to the conclusion that
> sometimes you want a newer version overriding yours (perhaps
> you expect Debian's fix to be more important than yours, perhaps
> you even expect theirs to supersede yours), while sometimes you
> don't.
>
> That's why I ended up with the suffix and letting the sysadmin
> (often me, with a different hat on ;-) making that preference
> explicit in the APT machinery.
>
That's what I do too.

+~tjw12r1
if I've patched the current version.
~tjw12r1 if I've backported a higher version.

I scan for newer versions in debian and auto-rebase my changes (unless
the rebase fails) so I'm rarely more than a day or two behind on
security fixes.

r1 -> r2 etc if I rebuild a package for any reason.

That weird +~ is to take account of nmus and ensuring that the next
debian version is always higher than mine. I got caught out when a +deb
security fix looked before my +tjw version so my system didn't notice
that 'upstream' had a fix.

tim@einstein(6):~ (none)$ apt-cache policy tgt
tgt:
   Installed: (none)
   Candidate: 1:1.0.85-1+deb12u1+~tjw12r1
   Version table:
      1:1.0.85-1+deb12u1+~tjw12r1 995
         995 http://aptmirror.home.woodall.me.uk/local bookworm/main amd64 Packages
      1:1.0.85-1+deb12u1 500
         500 http://deb.debian.org/debian bookworm/main amd64 Packages

Not sure if this was a case but it was a recent nmu that added a +deb
that could have been missed.

(the maintainer appears mia so I reported the bug upstream but not in
debian)

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Thread

question about apt upgrade facing locally build packages Patrice Duroux <patrice.duroux@gmail.com> - 2024-11-16 15:30 +0100
  Re: question about apt upgrade facing locally build packages <tomas@tuxteam.de> - 2024-11-16 16:00 +0100
    Re: question about apt upgrade facing locally build packages David Wright <deblis@lionunicorn.co.uk> - 2024-11-16 19:00 +0100
      Re: question about apt upgrade facing locally build packages <tomas@tuxteam.de> - 2024-11-16 19:30 +0100
        Re: Re: question about apt upgrade facing locally build packages Patrice Duroux <patrice.duroux@gmail.com> - 2024-11-16 21:00 +0100
          Re: Re: question about apt upgrade facing locally build packages <tomas@tuxteam.de> - 2024-11-17 07:50 +0100
          Re: question about apt upgrade facing locally build packages Anssi Saari <anssi.saari@debian-user.mail.kapsi.fi> - 2024-11-20 10:10 +0100
          Re: Re: question about apt upgrade facing locally build packages Tim Woodall <debianuser@woodall.me.uk> - 2024-11-22 13:30 +0100
        Re: question about apt upgrade facing locally build packages Tim Woodall <debianuser@woodall.me.uk> - 2024-11-20 13:10 +0100
          Re: question about apt upgrade facing locally build packages <tomas@tuxteam.de> - 2024-11-20 13:20 +0100

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