[Bug 2078356] Re: python3 upgrade has unmet dependencies

[Andreas Hasenack]

The preinst goes over those scripts in /usr/share/python3/runtime.d and
executes them one by one. It's supposed to show the error if one of them
fails, but I don't see that in your output...


#! /bin/sh
set -e

# remove the python3 alternatives before installing our own python3 link

update-alternatives --auto /usr/bin/python3 >/dev/null 2>&1 || true

[ -L /usr/share/doc/python3/html ] || rm -rf /usr/share/doc/python3/html

case "$1" in
    upgrade)
        oldv=$(echo $2 | sed 's/^\(...\).*/\1/')
        if [ "$DEBIAN_FRONTEND" != noninteractive ]; then
            echo "running python pre-rtupdate hooks for python3.12..."
        fi
        for hook in /usr/share/python3/runtime.d/*.rtupdate; do
            [ -x $hook ] || continue
            if ! $hook pre-rtupdate python$oldv python3.12; then
                hb=$(basename $hook .rtupdate)
                echo >&2 "error running python pre-rtupdate hook $hb"
                echo >&2 "running python failed-pre-rtupdate hook $hb"
                $hook failed-pre-rtupdate python$oldv python3.12
                errors=yes
                break
            fi
        done
        [ -z "$errors" ] || exit 3
esac

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https://bugs.launchpad.net/bugs/2078356

Title:
  python3 upgrade has unmet dependencies

Status in python3-defaults package in Ubuntu:
  New

Bug description:
  running python pre-rtupdate hooks for python3.12...
  dpkg: error processing archive /var/cache/apt/archives/python3_3.12.3-0ubuntu2_amd64.deb (--unpack):
   new python3 package pre-installation script subprocess returned error exit status 3
  Preparing to unpack .../libpython3-stdlib_3.12.3-0ubuntu2_amd64.deb ...
  Unpacking libpython3-stdlib:amd64 (3.12.3-0ubuntu2) over (3.12.3-0ubuntu1) ...
  Preparing to unpack .../libsmartcols1_2.39.3-9ubuntu6.1_amd64.deb ...
  Unpacking libsmartcols1:amd64 (2.39.3-9ubuntu6.1) over (2.39.3-9ubuntu6) ...
  Errors were encountered while processing:
   /var/cache/apt/archives/python3_3.12.3-0ubuntu2_amd64.deb
  E: Sub-process /usr/bin/dpkg returned an error code (1)

  ProblemType: Bug
  DistroRelease: Ubuntu 24.04
  Package: python3 3.12.3-0ubuntu1
  ProcVersionSignature: Ubuntu 6.8.0-41.41-generic 6.8.12
  Uname: Linux 6.8.0-41-generic x86_64
  NonfreeKernelModules: nvidia_modeset nvidia zfs
  ApportVersion: 2.28.1-0ubuntu3.1
  Architecture: amd64
  CasperMD5CheckResult: pass
  CurrentDesktop: ubuntu:GNOME
  Date: Thu Aug 29 10:52:19 2024
  InstallationDate: Installed on 2024-07-13 (47 days ago)
  InstallationMedia: Ubuntu 24.04 LTS "Noble Numbat" - Release amd64 (20240424)
  ProcEnviron:
   LANG=en_US.UTF-8
   PATH=(custom, no user)
   SHELL=/bin/bash
   TERM=xterm-256color
  SourcePackage: python3-defaults
  UpgradeStatus: No upgrade log present (probably fresh install)

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