$ ./bin/gmg dbupdate
Traceback (most recent call last):
  File "./bin/gmg", line 9, in <module>
    load_entry_point('mediagoblin==0.8.0', 'console_scripts', 'gmg')()
  File "/home/ben/work/ws/mediagoblin-py3.4/mediagoblin/gmg_commands/__init__.py", line 105, in main_cli
    setup_func = import_component(command_struct['setup'])
  File "/home/ben/work/ws/mediagoblin-py3.4/mediagoblin/tools/common.py", line 34, in import_component
    __import__(module_name)
  File "/home/ben/work/ws/mediagoblin-py3.4/mediagoblin/gmg_commands/users.py", line 23, in <module>
    from mediagoblin.db.models import LocalUser
  File "/home/ben/work/ws/mediagoblin-py3.4/mediagoblin/db/models.py", line 39, in <module>
    from mediagoblin.db.mixin import UserMixin, MediaEntryMixin, \
  File "/home/ben/work/ws/mediagoblin-py3.4/mediagoblin/db/mixin.py", line 40, in <module>
    from mediagoblin.tools.text import cleaned_markdown_conversion
  File "/home/ben/work/ws/mediagoblin-py3.4/mediagoblin/tools/text.py", line 19, in <module>
    from lxml.html.clean import Cleaner
  File "/usr/lib/python3/dist-packages/lxml/html/__init__.py", line 42, in <module>
    from lxml import etree
ImportError: cannot import name etree