Cannot migrate wagtailcore to zero

Running django-admin migrate wagtailcore zero fails as shown below, likely because of a missing dependency.

I suspect this is the reverse of the problem described in this comment.

Operations to perform:
  Unapply all migrations: wagtailcore
Running migrations:
  Rendering model states... DONE
  Unapplying wagtailsearchpromotions.0002_capitalizeverbose... OK
  Unapplying wagtailsearchpromotions.0001_initial... OK
  Unapplying wagtailsearch.0003_remove_editors_pick... OK
  Unapplying wagtailsearch.0002_add_verbose_names... OK
  Unapplying wagtailsearch.0001_initial... OK
  Unapplying wagtailredirects.0005_capitalizeverbose... OK
  Unapplying wagtailredirects.0004_set_unique_on_path_and_site... OK
  Unapplying wagtailredirects.0003_make_site_field_editable... OK
  Unapplying wagtailredirects.0002_add_verbose_names... OK
  Unapplying wagtailredirects.0001_initial... OK
  Unapplying wagtailimages.0012_copy_image_permissions_to_collections... OK
  Unapplying wagtailimages.0011_image_collection... OK
  Unapplying wagtailimages.0010_change_on_delete_behaviour... OK
  Unapplying wagtailimages.0009_capitalizeverbose... OK
  Unapplying wagtailimages.0008_image_created_at_index... OK
  Unapplying wagtailimages.0007_image_file_size... OK
  Unapplying wagtailimages.0006_add_verbose_names... OK
  Unapplying wagtailimages.0005_make_filter_spec_unique... OK
  Unapplying wagtailimages.0004_make_focal_point_key_not_nullable... OK
  Unapplying wagtailimages.0003_fix_focal_point_fields... OK
  Unapplying wagtailimages.0002_initial_data... OK
  Unapplying wagtailforms.0003_capitalizeverbose... OK
  Unapplying wagtailforms.0002_add_verbose_names... OK
  Unapplying wagtailforms.0001_initial... OK
  Unapplying wagtaildocs.0007_merge... OK
  Unapplying wagtaildocs.0006_copy_document_permissions_to_collections... OK
  Unapplying wagtaildocs.0005_document_collection... OK
  Unapplying wagtaildocs.0005_alter_uploaded_by_user_on_delete_action... OK
  Unapplying wagtaildocs.0004_capitalizeverbose... OK
  Unapplying wagtaildocs.0003_add_verbose_names... OK
  Unapplying wagtaildocs.0002_initial_data... OK
  Unapplying wagtailcore.0028_merge... OK
  Unapplying wagtailcore.0027_fix_collection_path_collation... OK
  Unapplying wagtailcore.0026_group_collection_permission... OK
  Unapplying wagtailcore.0025_collection_initial_data... OK
  Unapplying wagtailcore.0024_collection... OK
  Unapplying wagtailcore.0024_alter_page_content_type_on_delete_behaviour... OK
  Unapplying wagtailcore.0023_alter_page_revision_on_delete_behaviour... OK
  Unapplying wagtailcore.0022_add_site_name... OK
  Unapplying wagtailcore.0021_capitalizeverbose... OK
  Unapplying wagtailcore.0020_add_index_on_page_first_published_at... OK
  Unapplying wagtailcore.0019_verbose_names_cleanup... OK
  Unapplying wagtailcore.0018_pagerevision_submitted_for_moderation_index... OK
  Unapplying wagtailcore.0017_change_edit_page_permission_description... OK
  Unapplying wagtailadmin.0001_create_admin_access_permissions...Traceback (most recent call last):
  File "~/.virtualenvs/project/lib/python3.5/site-packages/django/db/backends/utils.py", line 64, in execute
    return self.cursor.execute(sql, params)
psycopg2.ProgrammingError: relation "wagtailcore_groupcollectionpermission" does not exist
LINE 1: DELETE FROM "wagtailcore_groupcollectionpermission" WHERE "w...
                    ^


The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "~/.virtualenvs/project/bin/django-admin", line 11, in <module>
    sys.exit(execute_from_command_line())
  File "~/.virtualenvs/project/lib/python3.5/site-packages/django/core/management/__init__.py", line 353, in execute_from_command_line
    utility.execute()
  File "~/.virtualenvs/project/lib/python3.5/site-packages/django/core/management/__init__.py", line 345, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "~/.virtualenvs/project/lib/python3.5/site-packages/django/core/management/base.py", line 348, in run_from_argv
    self.execute(*args, **cmd_options)
  File "~/.virtualenvs/project/lib/python3.5/site-packages/django/core/management/base.py", line 399, in execute
    output = self.handle(*args, **options)
  File "~/.virtualenvs/project/lib/python3.5/site-packages/django/core/management/commands/migrate.py", line 200, in handle
    executor.migrate(targets, plan, fake=fake, fake_initial=fake_initial)
  File "~/.virtualenvs/project/lib/python3.5/site-packages/django/db/migrations/executor.py", line 96, in migrate
    self._migrate_all_backwards(plan, full_plan, fake=fake)
  File "~/.virtualenvs/project/lib/python3.5/site-packages/django/db/migrations/executor.py", line 163, in _migrate_all_backwards
    self.unapply_migration(states[migration], migration, fake=fake)
  File "~/.virtualenvs/project/lib/python3.5/site-packages/django/db/migrations/executor.py", line 218, in unapply_migration
    state = migration.unapply(state, schema_editor)
  File "~/.virtualenvs/project/lib/python3.5/site-packages/django/db/migrations/migration.py", line 172, in unapply
    operation.database_backwards(self.app_label, schema_editor, from_state, to_state)
  File "~/.virtualenvs/project/lib/python3.5/site-packages/django/db/migrations/operations/special.py", line 189, in database_backwards
    self.reverse_code(from_state.apps, schema_editor)
  File "~/.virtualenvs/project/lib/python3.5/site-packages/wagtail/wagtailadmin/migrations/0001_create_admin_access_permissions.py", line 42, in remove_admin_access_permissions
    codename='access_admin',
  File "~/.virtualenvs/project/lib/python3.5/site-packages/django/db/models/query.py", line 600, in delete
    deleted, _rows_count = collector.delete()
  File "~/.virtualenvs/project/lib/python3.5/site-packages/django/db/models/deletion.py", line 292, in delete
    count = qs._raw_delete(using=self.using)
  File "~/.virtualenvs/project/lib/python3.5/site-packages/django/db/models/query.py", line 614, in _raw_delete
    return sql.DeleteQuery(self.model).delete_qs(self, using)
  File "~/.virtualenvs/project/lib/python3.5/site-packages/django/db/models/sql/subqueries.py", line 81, in delete_qs
    cursor = self.get_compiler(using).execute_sql(CURSOR)
  File "~/.virtualenvs/project/lib/python3.5/site-packages/django/db/models/sql/compiler.py", line 848, in execute_sql
    cursor.execute(sql, params)
  File "~/.virtualenvs/project/lib/python3.5/site-packages/django/db/backends/utils.py", line 79, in execute
    return super(CursorDebugWrapper, self).execute(sql, params)
  File "~/.virtualenvs/project/lib/python3.5/site-packages/django/db/backends/utils.py", line 64, in execute
    return self.cursor.execute(sql, params)
  File "~/.virtualenvs/project/lib/python3.5/site-packages/django/db/utils.py", line 95, in __exit__
    six.reraise(dj_exc_type, dj_exc_value, traceback)
  File "~/.virtualenvs/project/lib/python3.5/site-packages/django/utils/six.py", line 685, in reraise
    raise value.with_traceback(tb)
  File "~/.virtualenvs/project/lib/python3.5/site-packages/django/db/backends/utils.py", line 64, in execute
    return self.cursor.execute(sql, params)
django.db.utils.ProgrammingError: relation "wagtailcore_groupcollectionpermission" does not exist
LINE 1: DELETE FROM "wagtailcore_groupcollectionpermission" WHERE "w...

[PekopT]

upgrading from wagtail 1.0 to 1.8 caused following

Traceback (most recent call last):
  File "manage.py", line 18, in <module>
    execute_from_command_line(sys.argv)
  File "/Users/PekopT/Virtualenvs/crm-py3/lib/python3.4/site-packages/django/core/management/__init__.py", line 367, in execute_from_command_line
    utility.execute()
  File "/Users/PekopT/Virtualenvs/crm-py3/lib/python3.4/site-packages/django/core/management/__init__.py", line 359, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/Users/PekopT/Virtualenvs/crm-py3/lib/python3.4/site-packages/django/core/management/base.py", line 294, in run_from_argv
    self.execute(*args, **cmd_options)
  File "/Users/PekopT/Virtualenvs/crm-py3/lib/python3.4/site-packages/django/core/management/base.py", line 345, in execute
    output = self.handle(*args, **options)
  File "/Users/PekopT/Virtualenvs/crm-py3/lib/python3.4/site-packages/django/core/management/commands/migrate.py", line 86, in handle
    executor.loader.check_consistent_history(connection)
  File "/Users/PekopT/Virtualenvs/crm-py3/lib/python3.4/site-packages/django/db/migrations/loader.py", line 292, in check_consistent_history
    connection.alias,
django.db.migrations.exceptions.InconsistentMigrationHistory: Migration wagtailadmin.0001_create_admin_access_permissions is applied before its dependency wagtailcore.0026_group_collection_permission on database 'default'.

Commenting this line is the solution https://github.com/wagtail/wagtail/commit/bee221b8c9626df725cae9372c301a03c8ed9bae#diff-c80f81bff2ea91134d39e7fd667808d5R51

I think something wrong with this solution.

[aaugustin]

Workaround: run django-admin migrate wagtailadmin zero --fake then re-run django-admin migrate wagtailcore zero.