[Python-modules-team] Bug#865943: django-sitetree FTBFS: ValueError: expected only letters, got u''

[Adrian Bunk]

Source: django-sitetree
Version: 1.7.0-1
Severity: serious
Tags: buster sid

django-sitetree FTBFS with the new python-babel:

https://tests.reproducible-builds.org/debian/rb-pkg/unstable/amd64/django-sitetree.html

...
   debian/rules override_dh_auto_build
make[1]: Entering directory '/build/1st/django-sitetree-1.7.0'
set -e; \
for loc in sitetree/locale/*; do \
	python setup.py compile_catalog --directory sitetree/locale/ --locale $(basename $loc) --domain django; \
done
running compile_catalog
compiling catalog sitetree/locale/de/LC_MESSAGES/django.po to sitetree/locale/de/LC_MESSAGES/django.mo
running compile_catalog
Traceback (most recent call last):
  File "setup.py", line 45, in <module>
    'Programming Language :: Python :: 3.5',
  File "/usr/lib/python2.7/distutils/core.py", line 151, in setup
    dist.run_commands()
  File "/usr/lib/python2.7/distutils/dist.py", line 953, in run_commands
    self.run_command(cmd)
  File "/usr/lib/python2.7/distutils/dist.py", line 972, in run_command
    cmd_obj.run()
  File "/usr/lib/python2.7/dist-packages/babel/messages/frontend.py", line 182, in run
    self._run_domain(domain)
  File "/usr/lib/python2.7/dist-packages/babel/messages/frontend.py", line 221, in _run_domain
    catalog = read_po(infile, locale)
  File "/usr/lib/python2.7/dist-packages/babel/messages/pofile.py", line 331, in read_po
    parser.parse(fileobj)
  File "/usr/lib/python2.7/dist-packages/babel/messages/pofile.py", line 265, in parse
    self._process_comment(line)
  File "/usr/lib/python2.7/dist-packages/babel/messages/pofile.py", line 224, in _process_comment
    self._finish_current_message()
  File "/usr/lib/python2.7/dist-packages/babel/messages/pofile.py", line 164, in _finish_current_message
    self._add_message()
  File "/usr/lib/python2.7/dist-packages/babel/messages/pofile.py", line 158, in _add_message
    self.catalog[msgid] = message
  File "/usr/lib/python2.7/dist-packages/babel/messages/catalog.py", line 603, in __setitem__
    self.mime_headers = _parse_header(message.string).items()
  File "/usr/lib/python2.7/dist-packages/babel/messages/catalog.py", line 406, in _set_mime_headers
    self.locale = Locale.parse(value)
  File "/usr/lib/python2.7/dist-packages/babel/core.py", line 267, in parse
    parts = parse_locale(identifier, sep=sep)
  File "/usr/lib/python2.7/dist-packages/babel/core.py", line 1093, in parse_locale
    raise ValueError('expected only letters, got %r' % lang)
ValueError: expected only letters, got u''
debian/rules:12: recipe for target 'override_dh_auto_build' failed
make[1]: *** [override_dh_auto_build] Error 1
make[1]: Leaving directory '/build/1st/django-sitetree-1.7.0'