gourmand crashed with ImportError in /usr/lib/python3/dist-packages/extruct/xmldom.py: cannot import name '_ElementStringResult' from 'lxml.etree' (/usr/lib/python3/dist-packages/lxml/etree.cpython-312-x86_64-linux-gnu.so)

[Steve Langasek]

[ Impact ]
The extruct package is a python module that cannot be used in noble because it is incompatible with the lxml module that is shipped in noble.

[ Test plan ]
1. bad:
$ python3 -c 'import extruct'
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/usr/lib/python3/dist-packages/extruct/__init__.py", line 1, in <module>
    from ._extruct import SYNTAXES, extract
  File "/usr/lib/python3/dist-packages/extruct/_extruct.py", line 9, in <module>
    from extruct.dublincore import DublinCoreExtractor
  File "/usr/lib/python3/dist-packages/extruct/dublincore.py", line 6, in <module>
    from extruct.utils import parse_html
  File "/usr/lib/python3/dist-packages/extruct/utils.py", line 5, in <module>
    from extruct.xmldom import XmlDomHTMLParser
  File "/usr/lib/python3/dist-packages/extruct/xmldom.py", line 9, in <module>
    from lxml.etree import (
ImportError: cannot import name '_ElementStringResult' from 'lxml.etree' (/usr/lib/python3/dist-packages/lxml/etree.cpython-312-x86_64-linux-gnu.so). Did you mean: '_ElementUnicodeResult'?
$

2. good:
$ python3 -c 'import extruct'
$

[ Where problems could occur ]
The package as shipped is completely unusable so runtime regressions are not possible.

The Debian fix for this includes introducing an additional dependency, so new install-time failures are possible but unlikely. No analysis has been done to check for this.

[ Original description ]
Well, for the fourth Ubuntu release running, gourmand is completely unusable.

Downgrading again to my local copy of gourmand 1.1.0+really1.0.0-3.

ProblemType: Crash
DistroRelease: Ubuntu 24.04
Package: gourmand 1.1.0+really1.1.0~rc3-3
ProcVersionSignature: Ubuntu 6.8.0-31.31-generic 6.8.1
Uname: Linux 6.8.0-31-generic x86_64
NonfreeKernelModules: zfs
ApportVersion: 2.28.1-0ubuntu3
Architecture: amd64
CasperMD5CheckResult: unknown
CurrentDesktop: ubuntu:GNOME
Date: Thu May 23 16:13:30 2024
ExecutablePath: /usr/bin/gourmand
InstallationDate: Installed on 2019-12-23 (1613 days ago)
InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017)
InterpreterPath: /usr/bin/python3.12
JournalErrors: -- No entries --
PackageArchitecture: all
ProcCmdline: /usr/bin/python3 /usr/bin/gourmand --database-url=postgresql://borges/recipes
Python3Details: /usr/bin/python3.12, Python 3.12.3, python3-minimal, 3.12.3-0ubuntu1
PythonArgs: ['/usr/bin/gourmand', '--database-url=postgresql://borges/recipes']
PythonDetails: N/A
SourcePackage: gourmand
Title: gourmand crashed with ImportError in /usr/lib/python3/dist-packages/extruct/xmldom.py: cannot import name '_ElementStringResult' from 'lxml.etree' (/usr/lib/python3/dist-packages/lxml/etree.cpython-312-x86_64-linux-gnu.so)
UpgradeStatus: Upgraded to noble on 2024-05-22 (1 days ago)
UserGroups: adm cdrom dip libvirt lpadmin lxd plugdev sambashare sbuild src sudo
modified.conffile..etc.apport.crashdb.conf: [modified]
mtime.conffile..etc.apport.crashdb.conf: 2024-05-23T16:12:43.275502

[Steve Langasek (vorlon)]

Probably fixed by:

extruct (0.16.0-4) unstable; urgency=medium

  * Add upstream patch to add support for python3 lxml >= 5.2.0 and
    python3-lxml-html-clean to Depends.

 -- Christian Marillat <email address hidden> Fri, 19 Apr 2024 11:44:13 +0200

[Benjamin Drung (bdrung)]

extruct has no autopkgtest. How about adding at least autopkgtest-pkg-python to catch those kind of issues earlier next time?