old_contents: import os
  from django.conf import settings
  from django.core.exceptions import ImproperlyConfigured
  
  SIMPLESTATIC_DIR = getattr(settings, 'SIMPLESTATIC_DIR', None)
  if not SIMPLESTATIC_DIR:
      raise ImproperlyConfigured('You must set SIMPLESTATIC_DIR in settings.')
  
  SIMPLESTATIC_DEBUG = getattr(settings, 'SIMPLESTATIC_DEBUG',
      settings.DEBUG)
  
  SIMPLESTATIC_DEBUG_PATH = getattr(settings, 'SIMPLESTATIC_DEBUG_PATH',
      'static/')
  
  SIMPLESTATIC_COMPRESSED_DIR = getattr(settings,
      'SIMPLESTATIC_COMPRESSED_DIR', 'compressed')
  
  AWS_ACCESS_KEY_ID = getattr(settings, 'AWS_ACCESS_KEY_ID', None)
  if not AWS_ACCESS_KEY_ID:
      raise ImproperlyConfigured('You must set AWS_ACCESS_KEY_ID in settings.')
  
  AWS_SECRET_ACCESS_KEY = getattr(settings, 'AWS_SECRET_ACCESS_KEY', None)
  if not AWS_SECRET_ACCESS_KEY:
      raise ImproperlyConfigured(
          'You must set AWS_SECRET_ACCESS_KEY in settings.')
  
  AWS_STORAGE_BUCKET_NAME = getattr(settings, 'AWS_STORAGE_BUCKET_NAME', None)
  if not AWS_STORAGE_BUCKET_NAME:
      raise ImproperlyConfigured(
          'You must set AWS_STORAGE_BUCKET_NAME in settings.')
  
  CLOSURE_COMPILER_JAR = getattr(settings, 'CLOSURE_COMPILER_JAR', None)
  if not CLOSURE_COMPILER_JAR:
      CLOSURE_COMPILER_JAR = os.path.abspath(
          os.path.join(os.path.dirname(__file__), 'compiler.jar')
      )
  
  CLOSURE_COMPILATION_LEVEL = getattr(settings, 'CLOSURE_COMPILATION_LEVEL',
      'SIMPLE_OPTIMIZATIONS')
  
  CLOSURE_COMPILER_COMMAND = getattr(settings, 'CLOSURE_COMPILER_COMMAND', None)
  if not CLOSURE_COMPILER_COMMAND:
      CLOSURE_COMPILER_COMMAND = 'java -jar %s' % (CLOSURE_COMPILER_JAR,)
  
new_contents: import os
  from django.conf import settings
  from django.core.exceptions import ImproperlyConfigured
  
  SIMPLESTATIC_DIR = getattr(settings, 'SIMPLESTATIC_DIR', None)
  if not SIMPLESTATIC_DIR:
      raise ImproperlyConfigured('You must set SIMPLESTATIC_DIR in settings.')
  
  SIMPLESTATIC_DEBUG = getattr(settings, 'SIMPLESTATIC_DEBUG',
      settings.DEBUG)
  
  SIMPLESTATIC_DEBUG_PATH = getattr(settings, 'SIMPLESTATIC_DEBUG_PATH',
      'static/')
  
  SIMPLESTATIC_COMPRESSED_DIR = getattr(settings,
      'SIMPLESTATIC_COMPRESSED_DIR', 'compressed')
  
  AWS_ACCESS_KEY_ID = getattr(settings, 'AWS_ACCESS_KEY_ID', None)
  if not AWS_ACCESS_KEY_ID:
      raise ImproperlyConfigured('You must set AWS_ACCESS_KEY_ID in settings.')
  
  AWS_SECRET_ACCESS_KEY = getattr(settings, 'AWS_SECRET_ACCESS_KEY', None)
  if not AWS_SECRET_ACCESS_KEY:
      raise ImproperlyConfigured(
          'You must set AWS_SECRET_ACCESS_KEY in settings.')
  
  AWS_STORAGE_BUCKET_NAME = getattr(settings, 'AWS_STORAGE_BUCKET_NAME', None)
  if not AWS_STORAGE_BUCKET_NAME:
      raise ImproperlyConfigured(
          'You must set AWS_STORAGE_BUCKET_NAME in settings.')
  
  SIMPLESTATIC_CUSTOM_DOMAIN = getattr(settings, 'SIMPLESTATIC_CUSTOM_DOMAIN',
      '%s.s3.amazonaws.com' % (AWS_STORAGE_BUCKET_NAME))
  
  CLOSURE_COMPILER_JAR = getattr(settings, 'CLOSURE_COMPILER_JAR', None)
  if not CLOSURE_COMPILER_JAR:
      CLOSURE_COMPILER_JAR = os.path.abspath(
          os.path.join(os.path.dirname(__file__), 'compiler.jar')
      )
  
  CLOSURE_COMPILATION_LEVEL = getattr(settings, 'CLOSURE_COMPILATION_LEVEL',
      'SIMPLE_OPTIMIZATIONS')
  
  CLOSURE_COMPILER_COMMAND = getattr(settings, 'CLOSURE_COMPILER_COMMAND', None)
  if not CLOSURE_COMPILER_COMMAND:
      CLOSURE_COMPILER_COMMAND = 'java -jar %s' % (CLOSURE_COMPILER_JAR,)
  
subject: add SIMPLESTATIC_CUSTOM_DOMAIN setting