old_contents: import logging
  import warnings
  
  from numba.core.config import PYVERSION
  
  if PYVERSION < (3, 9):
      try:
          import importlib_metadata
      except ImportError as ex:
          raise ImportError(
              "importlib_metadata backport is required for Python version < 3.9, "
              "try:\n"
              "$ conda/pip install importlib_metadata"
          ) from ex
  else:
      from importlib import metadata as importlib_metadata
  
  
  _already_initialized = False
  logger = logging.getLogger(__name__)
  
  
  def init_all():
      """Execute all `numba_extensions` entry points with the name `init`
  
      If extensions have already been initialized, this function does nothing.
      """
      global _already_initialized
      if _already_initialized:
          return
  
      # Must put this here to avoid extensions re-triggering initialization
      _already_initialized = True
  
      for entry_point in importlib_metadata.entry_points().get(
          "numba_extensions", ()
      ):
          if entry_point.name == "init":
              logger.debug('Loading extension: %s', entry_point)
              try:
                  func = entry_point.load()
                  func()
              except Exception as e:
                  msg = (f"Numba extension module '{entry_point.module}' "
                         f"failed to load due to '{type(e).__name__}({str(e)})'.")
                  warnings.warn(msg, stacklevel=2)
                  logger.debug('Extension loading failed for: %s', entry_point)
  
new_contents: import logging
  import warnings
  
  from numba.core.config import PYVERSION
  
  if PYVERSION < (3, 9):
      try:
          import importlib_metadata
      except ImportError as ex:
          raise ImportError(
              "importlib_metadata backport is required for Python version < 3.9, "
              "try:\n"
              "$ conda/pip install importlib_metadata"
          ) from ex
  else:
      from importlib import metadata as importlib_metadata
  
  
  _already_initialized = False
  logger = logging.getLogger(__name__)
  
  
  def init_all():
      """Execute all `numba_extensions` entry points with the name `init`
  
      If extensions have already been initialized, this function does nothing.
      """
      global _already_initialized
      if _already_initialized:
          return
  
      # Must put this here to avoid extensions re-triggering initialization
      _already_initialized = True
  
      def load_ep(entry_point):
          """Loads a given entry point. Warns and logs on failure.
          """
          logger.debug('Loading extension: %s', entry_point)
          try:
              func = entry_point.load()
              func()
          except Exception as e:
              msg = (f"Numba extension module '{entry_point.module}' "
                     f"failed to load due to '{type(e).__name__}({str(e)})'.")
              warnings.warn(msg, stacklevel=3)
              logger.debug('Extension loading failed for: %s', entry_point)
  
      eps = importlib_metadata.entry_points()
      # Split, Python 3.10+ and importlib_metadata 3.6+ have the "selectable"
      # interface, versions prior to that do not. See "compatibility note" in:
      # https://docs.python.org/3.10/library/importlib.metadata.html#entry-points
      if hasattr(eps, 'select'):
          for entry_point in eps.select(group="numba_extensions", name="init"):
              load_ep(entry_point)
      else:
          for entry_point in eps.get("numba_extensions", ()):
              if entry_point.name == "init":
                  load_ep(entry_point)
  
subject: Use `select()` method of `entry_points` as appropriate