old_contents: DATABASE_ENGINE = 'sqlite3'
  
  DATABASES = {
      'default': {
          'ENGINE': 'django.db.backends.sqlite3',
          'NAME': ':memory:',
      }
  }
  
  INSTALLED_APPS = [
      'django.contrib.contenttypes',
      'django.contrib.sites',
      'django_hosts',
      'tests',
  ]
  
  TEMPLATES = [
      {
          'BACKEND': 'django.template.backends.django.DjangoTemplates',
          'APP_DIRS': True,
      },
  ]
  
  ROOT_URLCONF = 'tests.urls.root'
  
  SITE_ID = 1
  
  SECRET_KEY = 'something-something'
  
  MIDDLEWARE_CLASSES = []
  
new_contents: DATABASES = {
      'default': {
          'ENGINE': 'django.db.backends.sqlite3',
          'NAME': ':memory:',
      }
  }
  
  INSTALLED_APPS = [
      'django.contrib.contenttypes',
      'django.contrib.sites',
      'django_hosts',
      'tests',
  ]
  
  TEMPLATES = [
      {
          'BACKEND': 'django.template.backends.django.DjangoTemplates',
          'APP_DIRS': True,
      },
  ]
  
  ROOT_URLCONF = 'tests.urls.root'
  
  SITE_ID = 1
  
  SECRET_KEY = 'something-something'
  
  MIDDLEWARE_CLASSES = []
  
subject: Remove old DATABASE_ENGINE setting.