demandimport: fix a crash in LazyFinder.__delattr__
I was tinkering with `with hgdemandimport.deactivated()` wrapped around loading
the keyring module, and got spew that seemed to be confirmed by PyCharm. But I
can't believe we haven't seen this before (and phabricator uses the same
pattern):
** Unknown exception encountered with possibly-broken third-party extension "mercurial_keyring" 1.4.3 (keyring 23.11.0, backend unknown)
** which supports versions unknown of Mercurial.
** Please disable "mercurial_keyring" and try your action again.
** If that fixes the bug please report it to
https://foss.heptapod.net/mercurial/mercurial_keyring/issues
** Python 3.9.15 (main, Oct 13 2022, 04:28:25) [GCC 7.5.0]
** Mercurial Distributed SCM (version 6.3.1)
** Extensions loaded: absorb, attorc 20220315, blackbox, eol, extdiff, fastannotate, lfs, mercurial_keyring 1.4.3 (keyring 23.11.0, backend unknown), phabblocker 20220315, phabricator 20220315, purge, rebase, schemes, share, show, strip, uncommit
Traceback (most recent call last):
File "/usr/local/bin/hg", line 59, in <module>
dispatch.run()
File "/usr/local/lib/python3.9/site-packages/mercurial/dispatch.py", line 143, in run
status = dispatch(req)
File "/usr/local/lib/python3.9/site-packages/mercurial/dispatch.py", line 232, in dispatch
status = _rundispatch(req)
File "/usr/local/lib/python3.9/site-packages/mercurial/dispatch.py", line 276, in _rundispatch
ret = _runcatch(req) or 0
File "/usr/local/lib/python3.9/site-packages/mercurial/dispatch.py", line 451, in _runcatch
return _callcatch(ui, _runcatchfunc)
File "/usr/local/lib/python3.9/site-packages/mercurial/dispatch.py", line 461, in _callcatch
return scmutil.callcatch(ui, func)
File "/usr/local/lib/python3.9/site-packages/mercurial/scmutil.py", line 153, in callcatch
return func()
File "/usr/local/lib/python3.9/site-packages/mercurial/dispatch.py", line 441, in _runcatchfunc
return _dispatch(req)
File "/usr/local/lib/python3.9/site-packages/mercurial/dispatch.py", line 1265, in _dispatch
return runcommand(
File "/usr/local/lib/python3.9/site-packages/mercurial/dispatch.py", line 899, in runcommand
ret = _runcommand(ui, options, cmd, d)
File "/usr/local/lib/python3.9/site-packages/mercurial/dispatch.py", line 1277, in _runcommand
return cmdfunc()
File "/usr/local/lib/python3.9/site-packages/mercurial/dispatch.py", line 1263, in <lambda>
d = lambda: util.checksignature(func)(ui, *args, **strcmdopt)
File "/usr/local/lib/python3.9/site-packages/mercurial/util.py", line 1880, in check
return func(*args, **kwargs)
File "/root/mercurial_keyring/mercurial_keyring/mercurial_keyring.py", line 962, in cmd_keyring_check
user, pwd, source, final_url = handler.get_credentials(
File "/root/mercurial_keyring/mercurial_keyring/mercurial_keyring.py", line 497, in get_credentials
keyring_pwd = password_store.get_http_password(keyring_url, actual_user)
File "/root/mercurial_keyring/mercurial_keyring/mercurial_keyring.py", line 287, in get_http_password
return self._read_password_from_keyring(
File "/root/mercurial_keyring/mercurial_keyring/mercurial_keyring.py", line 335, in _read_password_from_keyring
keyring = import_keyring()
>> `with hgdemandimport.deactivated()` inserted here
File "/root/mercurial_keyring/mercurial_keyring/mercurial_keyring.py", line 120, in import_keyring
return _import_keyring()
File "/root/mercurial_keyring/mercurial_keyring/mercurial_keyring.py", line 133, in _import_keyring
mod, was_imported_now = meu.direct_import_ext(
File "/usr/lib/python3.9/site-packages/mercurial_extension_utils.py", line 1381, in direct_import_ext
__import__(module_name)
File "<frozen importlib._bootstrap>", line 1007, in _find_and_load
File "<frozen importlib._bootstrap>", line 986, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 680, in _load_unlocked
File "/usr/local/lib/python3.9/site-packages/hgdemandimport/demandimportpy3.py", line 46, in exec_module
self.loader.exec_module(module)
File "/usr/lib/python3.9/site-packages/keyring/__init__.py", line 1, in <module>
from .core import (
File "<frozen importlib._bootstrap>", line 1007, in _find_and_load
File "<frozen importlib._bootstrap>", line 986, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 680, in _load_unlocked
File "/usr/local/lib/python3.9/site-packages/hgdemandimport/demandimportpy3.py", line 46, in exec_module
self.loader.exec_module(module)
File "/usr/lib/python3.9/site-packages/keyring/core.py", line 11, in <module>
from . import backend, credentials
File "<frozen importlib._bootstrap>", line 1007, in _find_and_load
File "<frozen importlib._bootstrap>", line 986, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 680, in _load_unlocked
File "/usr/local/lib/python3.9/site-packages/hgdemandimport/demandimportpy3.py", line 46, in exec_module
self.loader.exec_module(module)
File "/usr/lib/python3.9/site-packages/keyring/backend.py", line 13, in <module>
from .py312compat import metadata
File "<frozen importlib._bootstrap>", line 1007, in _find_and_load
File "<frozen importlib._bootstrap>", line 986, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 680, in _load_unlocked
File "/usr/local/lib/python3.9/site-packages/hgdemandimport/demandimportpy3.py", line 46, in exec_module
self.loader.exec_module(module)
File "/usr/lib/python3.9/site-packages/keyring/py312compat.py", line 10, in <module>
import importlib_metadata as metadata # type: ignore
File "<frozen importlib._bootstrap>", line 1007, in _find_and_load
File "<frozen importlib._bootstrap>", line 986, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 680, in _load_unlocked
File "/usr/local/lib/python3.9/site-packages/hgdemandimport/demandimportpy3.py", line 46, in exec_module
self.loader.exec_module(module)
File "/usr/lib/python3.9/site-packages/importlib_metadata/__init__.py", line 715, in <module>
class MetadataPathFinder(NullFinder, DistributionFinder):
File "/usr/lib/python3.9/site-packages/importlib_metadata/_compat.py", line 24, in install
disable_stdlib_finder()
File "/usr/lib/python3.9/site-packages/importlib_metadata/_compat.py", line 43, in disable_stdlib_finder
del finder.find_distributions
File "/usr/local/lib/python3.9/site-packages/hgdemandimport/demandimportpy3.py", line 88, in __delattr__
return delattr(object.__getattribute__(self, "_finder"))
TypeError: delattr expected 2 arguments, got 1
