old_contents: # -*- coding: utf-8 -*-
  # Generated by Django 1.11.11 on 2018-04-28 22:31
  from __future__ import unicode_literals
  
  from django.conf import settings
  from django.db import migrations, models
  from django.db.backends.postgresql_psycopg2.schema import DatabaseSchemaEditor
  from django.db.migrations.state import StateApps
  
  
  def set_initial_value_for_history_public_to_subscribers(
          apps: StateApps, schema_editor: DatabaseSchemaEditor) -> None:
      stream_model = apps.get_model("zerver", "Stream")
      streams = stream_model.objects.all()
  
      for stream in streams:
          if stream.invite_only:
              stream.history_public_to_subscribers = settings.PRIVATE_STREAM_HISTORY_FOR_SUBSCRIBERS
          else:
              stream.history_public_to_subscribers = True
  
          if stream.is_in_zephyr_realm:
              stream.history_public_to_subscribers = False
  
          stream.save(update_fields=["history_public_to_subscribers"])
  
  class Migration(migrations.Migration):
  
      dependencies = [
          ('zerver', '0163_remove_userprofile_default_desktop_notifications'),
      ]
  
      operations = [
          migrations.AddField(
              model_name='stream',
              name='history_public_to_subscribers',
              field=models.BooleanField(default=False),
          ),
          migrations.RunPython(set_initial_value_for_history_public_to_subscribers,
                               reverse_code=migrations.RunPython.noop),
      ]
  
new_contents: # -*- coding: utf-8 -*-
  # Generated by Django 1.11.11 on 2018-04-28 22:31
  from __future__ import unicode_literals
  
  from django.conf import settings
  from django.db import migrations, models
  from django.db.backends.postgresql_psycopg2.schema import DatabaseSchemaEditor
  from django.db.migrations.state import StateApps
  
  
  def set_initial_value_for_history_public_to_subscribers(
          apps: StateApps, schema_editor: DatabaseSchemaEditor) -> None:
      stream_model = apps.get_model("zerver", "Stream")
      streams = stream_model.objects.all()
  
      for stream in streams:
          if stream.invite_only:
              stream.history_public_to_subscribers = getattr(settings, 'PRIVATE_STREAM_HISTORY_FOR_SUBSCRIBERS', False)
          else:
              stream.history_public_to_subscribers = True
  
          if stream.is_in_zephyr_realm:
              stream.history_public_to_subscribers = False
  
          stream.save(update_fields=["history_public_to_subscribers"])
  
  class Migration(migrations.Migration):
  
      dependencies = [
          ('zerver', '0163_remove_userprofile_default_desktop_notifications'),
      ]
  
      operations = [
          migrations.AddField(
              model_name='stream',
              name='history_public_to_subscribers',
              field=models.BooleanField(default=False),
          ),
          migrations.RunPython(set_initial_value_for_history_public_to_subscribers,
                               reverse_code=migrations.RunPython.noop),
      ]
  
subject: Remove dependence on PRIVATE_STREAM_HISTORY_FOR_SUBSCRIBERS.