code: def install(flag):
      def dec_install(cls):
          """
          Class decorator for installation on sys.meta_path.
  
          Adds the backport DistributionFinder to sys.meta_path and
          attempts to disable the finder functionality of the stdlib
          DistributionFinder.
          """
          if flag:
              sys.meta_path.append(cls())
              disable_stdlib_finder()
          return cls
  
      return dec_install
  
imports: import sys
  import platform
label_desc: Use image node_id 1 for calling a global function with example usage: install(flag) and returns: dec_install, cls