old_contents: import setuptools
  import tokenize
  
  __file__='setup.py';
  
  exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\\r\\n', '\\n'), __file__, 'exec'))
  
new_contents: # -*- coding: utf-8 -*-
  
  import setuptools
  import tokenize
  
  __file__='setup.py';
  
  exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\\r\\n', '\\n'), __file__, 'exec'))
  
subject: add file encoding spec to run_setup.py