migrate raises IndexError when getting parent from self.graph

[mszamot@…]

After deleting south migrations (I move from Django 1.6) and using ./manage.py makemigrations the ./manage.py migrate raises an error. Here is the full traceback:

Traceback (most recent call last):
  File "./manage.py", line 7, in <module>
    execute_from_command_line(sys.argv)
  File "/home/coot/webapps/social_feel/venv/src/django/django/core/management/__init__.py", line 427, in execute_from_command_line
    utility.execute()
  File "/home/coot/webapps/social_feel/venv/src/django/django/core/management/__init__.py", line 419, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/home/coot/webapps/social_feel/venv/src/django/django/core/management/base.py", line 288, in run_from_argv
    self.execute(*args, **options.__dict__)
  File "/home/coot/webapps/social_feel/venv/src/django/django/core/management/base.py", line 337, in execute
    output = self.handle(*args, **options)
  File "/home/coot/webapps/social_feel/venv/src/django/django/core/management/commands/migrate.py", line 62, in handle
    executor = MigrationExecutor(connection, self.migration_progress_callback)
  File "/home/coot/webapps/social_feel/venv/src/django/django/db/migrations/executor.py", line 14, in __init__
    self.loader = MigrationLoader(self.connection)
  File "/home/coot/webapps/social_feel/venv/src/django/django/db/migrations/loader.py", line 48, in __init__
    self.build_graph()
  File "/home/coot/webapps/social_feel/venv/src/django/django/db/migrations/loader.py", line 229, in build_graph
    parent = list(self.graph.root_nodes(parent[0]))[0]
IndexError: list index out of range

[Andrew Godwin]

Have you make sure all the files in the migrations directory are gone, even the .pyc files? Can you give me an example of the commands you ran as a console session with output included?

[Marcin Szamotulski <mszamot@…>]

Yes I did removed pyc files as well, and I used ./manage.py makemigrations; ./manage.py migrate; I found out that the problem was laying in migrations of an external app I am using (taggit). I think this ticket can be closed.