code: def minimum_sys(cls, inherit_path):
      
      site_libs = set(cls.site_libs())
      for site_lib in site_libs:
        TRACER.log('Found site-library: %s' % site_lib)
      for extras_path in cls._extras_paths():
        TRACER.log('Found site extra: %s' % extras_path)
        site_libs.add(extras_path)
      site_libs = set(os.path.normpath(path) for path in site_libs)
  
      sys_path, sys_path_importer_cache = cls.minimum_sys_path(site_libs, inherit_path)
      sys_modules = cls.minimum_sys_modules(site_libs)
  
      return sys_path, sys_path_importer_cache, sys_modules
docs: Return the minimum sys necessary to run this interpreter, a la python -S.
  
      :returns: (sys.path, sys.path_importer_cache, sys.modules) tuple of a
        bare python installation.