ImportError: cannot import name LaxOptionParser

[Bjwebb]

From our salt run:

----------
          ID: assets-standard-collaborator
    Function: cmd.run
        Name: source .ve/bin/activate; python manage.py assets build
      Result: False
     Comment: Command "source .ve/bin/activate; python manage.py assets build" run
     Started: 16:14:36.512559
    Duration: 387.64 ms
     Changes:   
              ----------
              pid:
                  24438
              retcode:
                  1
              stderr:
                  Traceback (most recent call last):
                    File "manage.py", line 58, in <module>
                      execute_from_command_line(sys.argv)
                    File "/home/opencontracting/standard-collaborator/django/website/.ve/local/lib/python2.7/site-packages/django/core/management/__init__.py", line 338, in execute_from_command_line
                      utility.execute()
                    File "/home/opencontracting/standard-collaborator/django/website/.ve/local/lib/python2.7/site-packages/django/core/management/__init__.py", line 330, in execute
                      self.fetch_command(subcommand).run_from_argv(self.argv)
                    File "/home/opencontracting/standard-collaborator/django/website/.ve/local/lib/python2.7/site-packages/django/core/management/__init__.py", line 190, in fetch_command
                      klass = load_command_class(app_name, subcommand)
                    File "/home/opencontracting/standard-collaborator/django/website/.ve/local/lib/python2.7/site-packages/django/core/management/__init__.py", line 40, in load_command_class
                      module = import_module('%s.management.commands.%s' % (app_name, name))
                    File "/usr/lib/python2.7/importlib/__init__.py", line 37, in import_module
                      __import__(name)
                    File "/home/opencontracting/standard-collaborator/django/website/.ve/local/lib/python2.7/site-packages/django_assets/management/commands/assets.py", line 29, in <module>
                      from django.core.management import LaxOptionParser
                  ImportError: cannot import name LaxOptionParser
              stdout:

I suspect this is due to changes in Django 1.8. It's not currently affecting our live/dev sites as the assets have not changed since last time they were successfully deployed.