old_contents: #
  # datavis.settings.production
  #   Django production settings
  
  from .default import *
  
  DEBUG = False
  
  LOG_DIR     = '/var/log/django'
  VAR_RUN_DIR = '/var/run/django'
  VAR_LIB_DIR = '/var/lib/django'
  
new_contents: #
  # datavis.settings.production
  #   Django production settings
  
  from .default import *
  
  DEBUG = False
  
  LOG_DIR     = '/var/log/django'
  VAR_RUN_DIR = '/var/run/django'
  VAR_LIB_DIR = '/var/lib/django'
  
  SECRET_KEY = os.environ.get('EOL_DATAVIS_SECRET_KEY')
  
  if SECRET_KEY == None:
    raise ValueError('EOL_DATAVIS_SECRET_KEY environment variable must be set when running with datavis.settings.production')
  
subject: raise ValueError if EOL_DATAVIS_SECRET_KEY env var is not populated; #10