[Bug 2078356] Re: python3 upgrade has unmet dependencies

[MCE Computer Service]

Let me catch up.

I created the file /var/lib/dpkg/info/python3.preinst and copied in the text from your post.
I added the set-x under set -e

I ran sudo -f install and this was the output:

sudo apt -f install
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Correcting dependencies... Done
The following additional packages will be installed:
  gnome-shell python3 ubuntu-release-upgrader-core ubuntu-release-upgrader-gtk
Suggested packages:
  gir1.2-malcontent-0 gir1.2-telepathyglib-0.12 gir1.2-telepathylogger-0.2 gnome-backgrounds gnome-shell-extension-prefs chrome-gnome-shell python3-doc python3-tk
  python3-venv
The following packages will be upgraded:
  gnome-shell python3 ubuntu-release-upgrader-core ubuntu-release-upgrader-gtk
4 upgraded, 0 newly installed, 0 to remove and 10 not upgraded.
2 not fully installed or removed.
Need to get 988 kB/1,011 kB of archives.
After this operation, 1,024 B disk space will be freed.
Do you want to continue? [Y/n] y
Get:1 http://us.archive.ubuntu.com/ubuntu noble-updates/main amd64 ubuntu-release-upgrader-gtk all 1:24.04.22 [9,070 B]
Get:2 http://us.archive.ubuntu.com/ubuntu noble-updates/main amd64 ubuntu-release-upgrader-core all 1:24.04.22 [27.4 kB]
Get:3 http://us.archive.ubuntu.com/ubuntu noble-updates/main amd64 gnome-shell amd64 46.0-0ubuntu6~24.04.4 [952 kB]
Fetched 988 kB in 1s (1,588 kB/s)    
(Reading database ... 218459 files and directories currently installed.)
Preparing to unpack .../python3_3.12.3-0ubuntu2_amd64.deb ...
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 .../ubuntu-release-upgrader-gtk_1%3a24.04.22_all.deb ...
Unpacking ubuntu-release-upgrader-gtk (1:24.04.22) over (1:24.04.19) ...
Preparing to unpack .../ubuntu-release-upgrader-core_1%3a24.04.22_all.deb ...
Unpacking ubuntu-release-upgrader-core (1:24.04.22) over (1:24.04.19) ...
Preparing to unpack .../gnome-shell_46.0-0ubuntu6~24.04.4_amd64.deb ...
Unpacking gnome-shell (46.0-0ubuntu6~24.04.4) over (46.0-0ubuntu6~24.04.3) ...
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)

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to python3-defaults in Ubuntu.
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)

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/python3-defaults/+bug/2078356/+subscriptions