old_contents: import typing as tp
  import pkg_resources
  
  try:
      __version__ = pkg_resources.require('python-dispatch-sphinx')[0].version
  except: # pragma: no cover
      __version__ = 'unknown'
  
  from sphinx.application import Sphinx
  
  from . import directives
  from . import documenters
  
  def setup(app: Sphinx) -> tp.Dict[str, tp.Any]:
      app.setup_extension(directives.__name__)
      app.setup_extension(documenters.__name__)
      return {
          'version':__version__,
          'parallel_read_safe':True,
          'parallel_write_safe':True,
      }
  
new_contents: import typing as tp
  import importlib.metadata
  
  __version__ = importlib.metadata.version('python-dispatch-sphinx')
  
  from sphinx.application import Sphinx
  
  from . import directives
  from . import documenters
  
  def setup(app: Sphinx) -> tp.Dict[str, tp.Any]:
      app.setup_extension(directives.__name__)
      app.setup_extension(documenters.__name__)
      return {
          'version':__version__,
          'parallel_read_safe':True,
          'parallel_write_safe':True,
      }
  
subject: Use importlib.metadata for version retrieval