[Pkg-mailman-hackers] Bug#962666: ModuleNotFoundError: No module named 'MySQLdb'

[Olaf Zaplinski]

Package: mailman3-web
Version: 0+20180916-8
Severity: normal

Dear Maintainer,

on a fresh installed Debian host I have installed mariadb-server first and then mailman3-full.

Auto configuration of mailman3-web fails:



Creating config file /etc/mailman3/mailman-hyperkitty.cfg with new version
Setting up g++ (4:8.3.0-1) ...
update-alternatives: using /usr/bin/g++ to provide /usr/bin/c++ (c++) in auto mode
Setting up python3-django-postorius (1.2.4-1) ...
Setting up python3-django-hyperkitty (1.2.2-1) ...
Setting up mailman3-web (0+20180916-8) ...
Determining localhost credentials from /etc/mysql/debian.cnf: succeeded.
dbconfig-common: writing config to /etc/dbconfig-common/mailman3-web.conf

Creating config file /etc/dbconfig-common/mailman3-web.conf with new version
checking privileges on database mailman3web for mailman3web at localhost: user creation needed.
granting access to database mailman3web for mailman3web at localhost: success.
verifying access for mailman3web at localhost: success.
creating database mailman3web: already exists.
dbconfig-common: flushing administrative password

Creating config file /etc/mailman3/mailman-web.py with new version
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/django/db/backends/mysql/base.py", line 26, in <module>
    import MySQLdb as Database
ModuleNotFoundError: No module named 'MySQLdb'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/bin/django-admin", line 21, in <module>
    management.execute_from_command_line()
  File "/usr/lib/python3/dist-packages/django/core/management/__init__.py", line 364, in execute_from_command_line
    utility.execute()
  File "/usr/lib/python3/dist-packages/django/core/management/__init__.py", line 338, in execute
    django.setup()
  File "/usr/lib/python3/dist-packages/django/__init__.py", line 27, in setup
    apps.populate(settings.INSTALLED_APPS)
  File "/usr/lib/python3/dist-packages/django/apps/registry.py", line 108, in populate
    app_config.import_models()
  File "/usr/lib/python3/dist-packages/django/apps/config.py", line 202, in import_models
    self.models_module = import_module(models_module_name)
  File "/usr/lib/python3.7/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
  File "<frozen importlib._bootstrap>", line 983, in _find_and_load
  File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 677, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 728, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/usr/lib/python3/dist-packages/hyperkitty/models/__init__.py", line 25, in <module>
    from .category import ThreadCategory
  File "/usr/lib/python3/dist-packages/hyperkitty/models/category.py", line 61, in <module>
    class ThreadCategory(models.Model):
  File "/usr/lib/python3/dist-packages/django/db/models/base.py", line 124, in __new__
    new_class.add_to_class('_meta', Options(meta, app_label))
  File "/usr/lib/python3/dist-packages/django/db/models/base.py", line 325, in add_to_class
    value.contribute_to_class(cls, name)
  File "/usr/lib/python3/dist-packages/django/db/models/options.py", line 214, in contribute_to_class
    self.db_table = truncate_name(self.db_table, connection.ops.max_name_length())
  File "/usr/lib/python3/dist-packages/django/db/__init__.py", line 33, in __getattr__
    return getattr(connections[DEFAULT_DB_ALIAS], item)
  File "/usr/lib/python3/dist-packages/django/db/utils.py", line 211, in __getitem__
    backend = load_backend(db['ENGINE'])
  File "/usr/lib/python3/dist-packages/django/db/utils.py", line 115, in load_backend
    return import_module('%s.base' % backend_name)
  File "/usr/lib/python3.7/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "/usr/lib/python3/dist-packages/django/db/backends/mysql/base.py", line 30, in <module>
    'Did you install mysqlclient or MySQL-python?' % e
django.core.exceptions.ImproperlyConfigured: Error loading MySQLdb module: No module named 'MySQLdb'.
Did you install mysqlclient or MySQL-python?
dpkg: error processing package mailman3-web (--configure):
 installed mailman3-web package post-installation script subprocess returned error exit status 1
dpkg: dependency problems prevent configuration of mailman3-full:
 mailman3-full depends on mailman3-web (>= 0+20180916-1); however:
  Package mailman3-web is not configured yet.




-- System Information:
Debian Release: 10.4
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 4.19.0-9-amd64 (SMP w/2 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages mailman3-web depends on:
ii  dbconfig-mysql                      2.0.11+deb10u1
ii  debconf [debconf-2.0]               1.5.71
ii  lsb-base                            10.2019051400
pn  node-less                           <none>
ii  python3                             3.7.3-1
pn  python3-django-hyperkitty           <none>
pn  python3-django-postorius            <none>
pn  python3-psycopg2 | python3-mysqldb  <none>
pn  python3-whoosh                      <none>
pn  sassc                               <none>
ii  ucf                                 3.0038+nmu1
pn  uwsgi                               <none>
pn  uwsgi-plugin-python3                <none>

Versions of packages mailman3-web recommends:
pn  libapache2-mod-proxy-uwsgi | nginx  <none>

Versions of packages mailman3-web suggests:
ii  mariadb-server-10.3 [virtual-mysql-server]  1:10.3.22-0+deb10u1