docs: def compile_bundle_entry(self, spec, entry):
          """
          Handler for each entry for the bundle method of the compile
          process.  This copies the source file or directory into the
          build directory.
          """
  
          modname, source, target, modpath = entry
          bundled_modpath = {modname: modpath}
          bundled_target = {modname: target}
          export_module_name = []
          if isfile(source):
              export_module_name.append(modname)
              copy_target = join(spec[BUILD_DIR], target)
              if not exists(dirname(copy_target)):
                  makedirs(dirname(copy_target))
              shutil.copy(source, copy_target)
          elif isdir(source):
              copy_target = join(spec[BUILD_DIR], modname)
              shutil.copytree(source, copy_target)
  
          return bundled_modpath, bundled_target, export_module_name