[Bug 2080940] Re: unattended-upgrades broken by python-upgrade

[Marc Deslauriers]

** Bug watch added: github.com/python/cpython/issues #124170
   https://github.com/python/cpython/issues/124170

** Also affects: python via
   https://github.com/python/cpython/issues/124170
   Importance: Unknown
       Status: Unknown

** Bug watch added: Debian Bug tracker #1079780
   https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1079780

** Also affects: python3.10 (Debian) via
   https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1079780
   Importance: Unknown
       Status: Unknown

** Package changed: python3.10 (Debian) => unattended-upgrades (Debian)

** Package changed: unattended-upgrades (Debian) => python3.12 (Debian)

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https://bugs.launchpad.net/bugs/2080940

Title:
  unattended-upgrades broken by python-upgrade

Status in Python:
  Unknown
Status in python3.10 package in Ubuntu:
  Confirmed
Status in python3.12 package in Ubuntu:
  Confirmed
Status in python3.8 package in Ubuntu:
  Confirmed
Status in unattended-upgrades package in Ubuntu:
  Won't Fix
Status in python3.12 package in Debian:
  Unknown

Bug description:
  at least focal and jammy are affected
  automatic updates installed "python3.10:amd64 3.10.12-1~22.04.6" tonight. This updated does not contain functions/classes required by unattended-upgrade. It resulted in broken status-emails for me, otherwise I would not have seen.

  One could argue that the bug is with python3.10, since there should be
  no breaking changes in LTS.

  Sep 17 06:05:01 xxx systemd[1]: Starting Daily apt upgrade and clean activities...
  Sep 17 06:05:24 xxx apt.systemd.daily[1894012]: Traceback (most recent call last):
  Sep 17 06:05:24 xxx apt.systemd.daily[1894012]:   File "/usr/bin/unattended-upgrade", line 2005, in main
  Sep 17 06:05:24 xxx apt.systemd.daily[1894012]:     send_summary_mail(res.pkgs, res.success, res.result_str,
  Sep 17 06:05:24 xxx apt.systemd.daily[1894012]:   File "/usr/bin/unattended-upgrade", line 1509, in send_summary_mail
  Sep 17 06:05:24 xxx apt.systemd.daily[1894012]:     ret = _send_mail_using_sendmail(from_email, to_email, subject, body)
  Sep 17 06:05:24 xxx apt.systemd.daily[1894012]:   File "/usr/bin/unattended-upgrade", line 1408, in _send_mail_using_sendmail
  Sep 17 06:05:24 xxx apt.systemd.daily[1894012]:     sendmail.stdin.write(msg.as_string())
  Sep 17 06:05:24 xxx apt.systemd.daily[1894012]:   File "/usr/lib/python3.10/email/message.py", line 151, in as_string
  Sep 17 06:05:24 xxx apt.systemd.daily[1894012]:     from email.generator import Generator
  Sep 17 06:05:24 xxx apt.systemd.daily[1894012]:   File "/usr/lib/python3.10/email/generator.py", line 17, in <module>
  Sep 17 06:05:24 xxx apt.systemd.daily[1894012]:     from email.errors import HeaderWriteError
  Sep 17 06:05:24 xxx apt.systemd.daily[1894012]: ImportError: cannot import name 'HeaderWriteError' from 'email.errors' (/usr/lib/python3.10/email/errors.py)

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