Generated new _mapping.py files. Which unfortunately get line endings (and have to be corrected manually afterwards).

Anyways, now the out put from py -m tox - e check is:

$ py -m tox -e check
.pkg: _optional_hooks> python C:\Users\puls\AppData\Roaming\Python\Python39\site-packages\pyproject_api_backend.py True setuptools.build_meta
.pkg: get_requires_for_build_editable> python C:\Users\puls\AppData\Roaming\Python\Python39\site-packages\pyproject_api_backend.py True setuptools.build_meta
.pkg: build_editable> python C:\Users\puls\AppData\Roaming\Python\Python39\site-packages\pyproject_api_backend.py True setuptools.build_meta
check: install_package> python -I -m pip install --force-reinstall --no-deps C:_git-ext\pygments\src.tox.tmp\package\23\Pygments-2.15.1-0.editable-py3-none-any.whl
check: commands[0]> python scripts/check_crlf.py pygments external
check: commands[1]> python scripts/detect_missing_analyse_text.py --skip-no-aliases
check: commands[2]> flake8 --select F --ignore F401 pygments
Exception in thread Thread-1:
Traceback (most recent call last):
File "C:\Users\puls\AppData\Local\Programs\Python\Python39\lib\threading.py", line 954, in _bootstrap_inner
self.run()
File "C:\Users\puls\AppData\Local\Programs\Python\Python39\lib\threading.py", line 892, in run
self._target(*self._args, **self._kwargs)
File "C:\Users\puls\AppData\Local\Programs\Python\Python39\lib\multiprocessing\pool.py", line 519, in _handle_workers
cls._wait_for_updates(current_sentinels, change_notifier)
File "C:\Users\puls\AppData\Local\Programs\Python\Python39\lib\multiprocessing\pool.py", line 499, in _wait_for_updates
wait(sentinels, timeout=timeout)
File "C:\Users\puls\AppData\Local\Programs\Python\Python39\lib\multiprocessing\connection.py", line 884, in wait
ready_handles = _exhaustive_wait(waithandle_to_obj.keys(), timeout)
File "C:\Users\puls\AppData\Local\Programs\Python\Python39\lib\multiprocessing\connection.py", line 816, in _exhaustive_wait
res = _winapi.WaitForMultipleObjects(L, False, timeout)
ValueError: need at most 63 handles, got a sequence of length 66

And those errors are meaningless to me.