[Bug 2100247] Re: Failure: The 3.0 solver produced a worse result

[Julian Andres Klode]

Do I understand this correctly? You were running a bare `apt dist-
upgrade`. It produced the result:

Upgrading google-chrome-stable:amd64 133.0.6943.126-1 133.0.6943.141-1
Upgrading gir1.2-gstreamer-1.0:amd64 1.25.50-1 1.25.90-1
Upgrading gstreamer1.0-tools:amd64 1.25.50-1 1.25.90-1
Upgrading libgstreamer1.0-0:amd64 1.25.50-1 1.25.90-1

and it seems that the 3.0 solver in addition also tries to install

Installing postgresql-client-17:amd64
Installing postgresql-client:amd64


Because you say "some packages are there to be installed.", did you run "apt dist-upgrade postgres-client" instead? The solver dumper is a bit buggy and will mix its own actions with the ones requested on the command-line, so I can't quite tell right now.

A bare dist-upgrade without any arguments produces the same result when
running the solvers on the generated dump (with the Install line
removed; which means no arguments to apt dist-upgrade). It's possible
that the translation either when dumping or when loading the dump is
missing a minor nuance _somewhere_

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https://bugs.launchpad.net/bugs/2100247

Title:
  Failure: The 3.0 solver produced a worse result

Status in apt package in Ubuntu:
  New

Bug description:
  this happens all the time when I run "apt dist-upgrade" and some
  packages are there to be installed.

  ProblemType: AptSolver
  DistroRelease: Ubuntu 25.04
  Package: apt 2.9.30ubuntu1
  ProcVersionSignature: Ubuntu 6.12.0-15.15-generic 6.12.11
  Uname: Linux 6.12.0-15-generic x86_64
  NonfreeKernelModules: zfs
  ApportVersion: 2.31.0+git20250220-0ubuntu2
  Architecture: amd64
  CasperMD5CheckResult: pass
  Date: Wed Feb 26 07:18:31 2025
  ErrorMessage:
   
  InstallationDate: Installed on 2024-07-18 (223 days ago)
  InstallationMedia: Ubuntu 24.04 LTS "Noble Numbat" - Release amd64 (20240424)
  SourcePackage: apt
  Title: Failure: The 3.0 solver produced a worse result
  UpgradeStatus: Upgraded to plucky on 2024-12-20 (68 days ago)

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