[Python-modules-team] Bug#961239: python-django-registration: Not compatible with Django 3.x

[Chris Lamb]

Source: python-django-registration
Version: 2.2-3
Severity: normal
User: python-modules-team at lists.alioth.debian.org
Usertags: django-3.x
Control: affects -1 mini-buildd

Dear maintainer,

The version of Django experimental is currently 3.0.6-1. I have built
the 153 reverse-dependencies in unstable against this version and 114
of these build & pass their testsuite successfully. For more
information, see:

    http://bugs.debian.org/960890

Please use the above bug report for queries or questions regarding
Django 3.x that are not specific to this particular package in order
to reduce duplicated work across all of the bugs.

Whilst python-django-registration itself builds from source, it causes
other packages (eg. mini-buildd) to FTBFS.

Here is the FTBFS from mini-buildd:

  […]

    File "/home/lamby/temp/cdt.20200517004829.Xc0msV8pPb.ags.lamby-debian-experimental.python3-mini-buildd/mini-buildd-1.1.31/src/mini_buildd/django_settings.py", line 168, in pseudo_configure
      django.setup()
    File "/usr/lib/python3/dist-packages/django/__init__.py", line 24, in setup
      apps.populate(settings.INSTALLED_APPS)
    File "/usr/lib/python3/dist-packages/django/apps/registry.py", line 114, in populate
      app_config.import_models()
    File "/usr/lib/python3/dist-packages/django/apps/config.py", line 211, in import_models
      self.models_module = import_module(models_module_name)
    File "/usr/lib/python3.8/importlib/__init__.py", line 127, in import_module
      return _bootstrap._gcd_import(name[level:], package, level)
    File "<frozen importlib._bootstrap>", line 1014, in _gcd_import
    File "<frozen importlib._bootstrap>", line 991, in _find_and_load
    File "<frozen importlib._bootstrap>", line 975, in _find_and_load_unlocked
    File "<frozen importlib._bootstrap>", line 671, in _load_unlocked
    File "<frozen importlib._bootstrap_external>", line 783, in exec_module
    File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
    File "/usr/lib/python3/dist-packages/registration/models.py", line 23, in <module>
      from django.utils.encoding import python_2_unicode_compatible
  ImportError: cannot import name 'python_2_unicode_compatible' from 'django.utils.encoding' (/usr/lib/python3/dist-packages/django/utils/encoding.py)
  
  make[1]: *** [debian/rules:21: override_dh_auto_build] Error 2
  make[1]: Leaving directory '/home/lamby/temp/cdt.20200517004829.Xc0msV8pPb.ags.lamby-debian-experimental.python3-mini-buildd/mini-buildd-1.1.31'
  make: *** [debian/rules:4: build] Error 2
  dpkg-buildpackage: error: debian/rules build subprocess returned exit status 2

  […]

The full build log is attached.


Regards,

-- 
      ,''`.
     : :'  :     Chris Lamb
     `. `'`      lamby at debian.org / chris-lamb.co.uk
       `-
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