#22932: "makemigrations" generates circular dependencies
-------------------------+-------------------------------------------------
Reporter: humitos | Owner: nobody
Type: Bug | Status: new
Component: | Version: master
Migrations | Keywords: circular dependency, migrations,
Severity: Normal | makemigrations
Triage Stage: | Has patch: 0
Unreviewed | UI/UX: 0
Easy pickings: 0 |
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I'm having an issue with the new migrations system included in Django. The
steps that I'm following to reproduce is, once the example project is
downloaded just run:
1. manage.py makemigrations
1. manage.py migrate
{{{
Traceback (most recent call last):
File "/home/humitos/Source/migration_test/manage.py", line 10, in
<module>
execute_from_command_line(sys.argv)
File "/home/humitos/.virtualenvs/tmp-
e997f5cc453b28eb/local/lib/python2.7/site-
packages/django/core/management/__init__.py", line 330, in
execute_from_command_line
utility.execute()
File "/home/humitos/.virtualenvs/tmp-
e997f5cc453b28eb/local/lib/python2.7/site-
packages/django/core/management/__init__.py", line 322, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/home/humitos/.virtualenvs/tmp-
e997f5cc453b28eb/local/lib/python2.7/site-
packages/django/core/management/base.py", line 363, in run_from_argv
self.execute(*args, **cmd_options)
File "/home/humitos/.virtualenvs/tmp-
e997f5cc453b28eb/local/lib/python2.7/site-
packages/django/core/management/base.py", line 412, in execute
output = self.handle(*args, **options)
File "/home/humitos/.virtualenvs/tmp-
e997f5cc453b28eb/local/lib/python2.7/site-
packages/django/core/management/commands/makemigrations.py", line 78, in
handle
loader.project_state(),
File "/home/humitos/.virtualenvs/tmp-
e997f5cc453b28eb/local/lib/python2.7/site-
packages/django/db/migrations/loader.py", line 268, in project_state
return self.graph.make_state(nodes=nodes, at_end=at_end,
real_apps=list(self.unmigrated_apps))
File "/home/humitos/.virtualenvs/tmp-
e997f5cc453b28eb/local/lib/python2.7/site-
packages/django/db/migrations/graph.py", line 140, in make_state
for migration in self.forwards_plan(node):
File "/home/humitos/.virtualenvs/tmp-
e997f5cc453b28eb/local/lib/python2.7/site-
packages/django/db/migrations/graph.py", line 55, in forwards_plan
return self.dfs(node, lambda x: self.dependencies.get(x, set()))
File "/home/humitos/.virtualenvs/tmp-
e997f5cc453b28eb/local/lib/python2.7/site-
packages/django/db/migrations/graph.py", line 121, in dfs
return _dfs(start, get_children, [])
File "/home/humitos/.virtualenvs/tmp-
e997f5cc453b28eb/local/lib/python2.7/site-
packages/django/db/migrations/graph.py", line 113, in _dfs
results = _dfs(n, get_children, path) + results
File "/home/humitos/.virtualenvs/tmp-
e997f5cc453b28eb/local/lib/python2.7/site-
packages/django/db/migrations/graph.py", line 113, in _dfs
results = _dfs(n, get_children, path) + results
File "/home/humitos/.virtualenvs/tmp-
e997f5cc453b28eb/local/lib/python2.7/site-
packages/django/db/migrations/graph.py", line 113, in _dfs
results = _dfs(n, get_children, path) + results
File "/home/humitos/.virtualenvs/tmp-
e997f5cc453b28eb/local/lib/python2.7/site-
packages/django/db/migrations/graph.py", line 105, in _dfs
raise CircularDependencyError(path[path.index(start):] + [start])
django.db.migrations.graph.CircularDependencyError: [('challenge',
u'0001_initial'), (u'team', u'0001_initial'), ('challenge',
u'0001_initial')]
}}}
If I remove the {{{myapp.team.TeamCaptain}}} model and the migration files
already created and I run those commands again, it creates the proper
migration files and it works.
I've been taking a look at #22325 but it doesn't seem to be the same
situation.
I tried this in Django 1.7b4, 1.7c1 and master and I always got the same
error.
What other kind of information can I provide?
--
Ticket URL: <https://code.djangoproject.com/ticket/22932>
Django <https://code.djangoproject.com/>
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