Hi all,
after upgrade from Ubuntu 25.10 (python3.13) to 26.04(python3.14) and
root@bywater ~ # python3 -m venv /opt/mailman/venv/
minutely:
Traceback (most recent call last):
File "/opt/mailman/venv/bin/mailman-web", line 3, in <module>
from mailman_web.manage import main
ModuleNotFoundError: No module named 'mailman_web'
root@bywater /opt/mailman/venv/bin # ll mailm*
-rwxr-xr-x 1 mailman www-data 204 Nov 5 2025 mailman*
-rwxr-xr-x 1 mailman www-data 203 Nov 5 2025 mailman-web*
root@bywater ~ # lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 26.04 LTS
Release: 26.04
Codename: resolute
root@bywater ~ # dpkg -l python3
┌── Desired=Unknown/Install/Remove/Purge/Hold
│┌─
Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
││┌ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
│││ Name Version Architecture Description
├┼┼─══════════════─═══════════════─════════════─═══════════════════════════════════════════════════════════════════════>
ii python3 3.14.3-0ubuntu2 amd64 interactive high-level
object-oriented language (default python3 versio>
root@bywater /opt/mailman/venv/lib/python3.14/site-packages # ll
total 16
drwxr-x--- 4 root root 4096 Aug 13 15:09 ./
drwxr-x--- 3 root root 4096 Aug 13 15:09 ../
drwxr-x--- 5 root root 4096 Aug 13 15:09 pip/
drwxr-x--- 3 root root 4096 Aug 13 15:09 pip-25.1.1.dist-info/
In an older thread (Deb11 -> Deb12), i found:
(venv) mailman@bywater:~$ pip install --force-reinstall mailman
Traceback (most recent call last):
File "/opt/mailman/venv/bin/pip", line 5, in <module>
from pip._internal.cli.main import main
ModuleNotFoundError: No module named 'pip'
I'm a bit stuck here. I usually do not work with python, so i do not
know how to proceed. Any hints?
TIA
QNo
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