I have ran `sudo apt update` more than a dozen times.
Policy after the fix is probably not informative:
apt-cache policy python3 python3-venv
python3:
Installed: 3.12.3-0ubuntu1
Candidate: 3.12.3-0ubuntu1
Version table:
*** 3.12.3-0ubuntu1 500
500 http://mirror.kakao.com/ubuntu noble/main amd64 Packages
100 /var/lib/dpkg/status
python3-venv:
Installed: 3.12.3-0ubuntu1
Candidate: 3.12.3-0ubuntu1
Version table:
*** 3.12.3-0ubuntu1 500
500 http://mirror.kakao.com/ubuntu noble/universe amd64 Packages
100 /var/lib/dpkg/status
My guess about what happened is that perhaps `3.12.3-0ubuntu2` got installed as
part of the OS installed, I've downloaded ubuntu-24.04.2-desktop-amd64.iso on
March 25 and then installed the system two days ago.
Here's what I can see in the /var/log/apt/history.log:
--- these are probably when the ISO was baked ---
Start-Date: 2025-02-15 08:09:50
Commandline: apt-get --yes -oDebug::pkgDepCache::AutoInstall=yes --force-yes
upgrade
Upgrade: ... python3-minimal:amd64 (3.12.3-0ubuntu1, 3.12.3-0ubuntu2) ...
python3:amd64 (3.12.3-0ubuntu1, 3.12.3-0ubuntu2) ... libpython3-stdlib:amd64
(3.12.3-0ubuntu1, 3.12.3-0ubuntu2) ...
Start-Date: 2025-02-15 08:10:24
Commandline: apt-get --yes -oDebug::pkgDepCache::AutoInstall=yes install ...
python3-gdbm:amd64 (3.12.3-0ubuntu1) ...
--- these are probably when I installed the system from the flash drive
/ ISO ---
Start-Date: 2025-03-29 12:27:05
Commandline: apt-get --quiet --assume-yes
--option=Dpkg::options::=--force-unsafe-io
--option=Dpkg::Options::=--force-confold install efibootmgr grub-efi-amd64
grub-efi-amd64-signed shim-signed
(python not mentioned)
Start-Date: 2025-03-29 12:27:56
Commandline: apt-get --quiet --assume-yes
--option=Dpkg::options::=--force-unsafe-io
--option=Dpkg::Options::=--force-confold install linux-generic-hwe-24.04
(python not mentioned)
Start-Date: 2025-03-29 12:28:34
Commandline: apt-get --quiet --assume-yes
--option=Dpkg::options::=--force-unsafe-io
--option=Dpkg::Options::=--force-confold install wpasupplicant
(python not mentioned)
Start-Date: 2025-03-29 12:28:43
Commandline: apt-get --quiet --assume-yes
--option=Dpkg::options::=--force-unsafe-io
--option=Dpkg::Options::=--force-confold install wbritish
(python not mentioned)
Start-Date: 2025-03-29 12:29:19
Commandline: /usr/bin/unattended-upgrades -v
Upgrade: ... python3.12:amd64 (3.12.3-1ubuntu0.4, 3.12.3-1ubuntu0.5) ...
python3.12-minimal:amd64 (3.12.3-1ubuntu0.4, 3.12.3-1ubuntu0.5) ... (and a few
more like libpython3, same versions all across)
(I'm a but confused about these, TBH)
--- these are when I fixed my system ---
Start-Date: 2025-03-31 09:24:56
Commandline: apt install --allow-downgrades python3=3.12.3-0ubuntu1
python3-full=3.12.3-0ubuntu1 python3-doc=3.12.3-0ubuntu1
python3-examples=3.12.3-0ubuntu1 python3-minimal=3.12.3-0ubuntu1
libpython3-stdlib=3.12.3-0ubuntu1
Requested-By: dima (1000)
Install: ...
Downgrade: python3-minimal:amd64 (3.12.3-0ubuntu2, 3.12.3-0ubuntu1),
python3:amd64 (3.12.3-0ubuntu2, 3.12.3-0ubuntu1), libpython3-stdlib:amd64
(3.12.3-0ubuntu2, 3.12.3-0ubuntu1)
---
The best explanation I can come up with is that -0ubuntu2 was a real build at
the time when ISO was made, and that build was since yanked.
https://launchpad.net/ubuntu/noble/+package/python3
lists 3.12.3-0ubuntu2 in proposed and updates
lists 3.12.3-0ubuntu1 in proposed and release
could it be that the install media either included a version too new?
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https://bugs.launchpad.net/bugs/2105455
Title:
python3-venv : Depends: python3 (= 3.12.3-0ubuntu1) but
3.12.3-0ubuntu2 is to be installed
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