old_contents: from distutils.command.bdist_wininst import bdist_wininst as _bdist_wininst
  
  class bdist_wininst(_bdist_wininst):
      _good_upload = _bad_upload = None
  
      def create_exe(self, arcname, fullname, bitmap=None):
          _bdist_wininst.create_exe(self, arcname, fullname, bitmap)
          installer_name = self.get_installer_filename(fullname)
          if self.target_version:
              pyversion = self.target_version
              # fix 2.5+ bdist_wininst ignoring --target-version spec
              self._bad_upload = ('bdist_wininst', 'any', installer_name)
          else:
              pyversion = 'any'
          self._good_upload = ('bdist_wininst', pyversion, installer_name)
  
      def _fix_upload_names(self):
          good, bad = self._good_upload, self._bad_upload
          dist_files = getattr(self.distribution, 'dist_files', [])
          if bad in dist_files:
              dist_files.remove(bad)
          if good not in dist_files:
              dist_files.append(good)
  
      def reinitialize_command(self, command, reinit_subcommands=0):
          cmd = self.distribution.reinitialize_command(
              command, reinit_subcommands)
          if command in ('install', 'install_lib'):
              cmd.install_lib = None  # work around distutils bug
          return cmd
  
      def run(self):
          self._is_running = True
          try:
              _bdist_wininst.run(self)
              self._fix_upload_names()
          finally:
              self._is_running = False
  
new_contents: from distutils.command.bdist_wininst import bdist_wininst as _bdist_wininst
  
  class bdist_wininst(_bdist_wininst):
      def reinitialize_command(self, command, reinit_subcommands=0):
          cmd = self.distribution.reinitialize_command(
              command, reinit_subcommands)
          if command in ('install', 'install_lib'):
              cmd.install_lib = None  # work around distutils bug
          return cmd
  
      def run(self):
          self._is_running = True
          try:
              _bdist_wininst.run(self)
          finally:
              self._is_running = False
  
subject: Remove patching of upload_names (dist_files) - Python 2.6 already does the right thing.