Default rcfile locations are scanned even when --rcfile option is specified

[daisuke834]

Bug description

With the latest version 2.14.4, pylint scans the default rcfile locations even when --rcfile option with valid rcfile path is specified. It is problematic because it caused a permission error when an user doesn't have an access permissions to the pre-determined default path of default rcfile files.

Configuration

No response

Command used

$ pylint --rcfile /config/pyproject.toml

Pylint output

Traceback (most recent call last):
  File "/home/myhome/.pyenv/versions/3.10.5/bin/pylint", line 8, in <module>
    sys.exit(run_pylint())
  File "/home/myhome/.pyenv/versions/3.10.5/lib/python3.10/site-packages/pylint/__init__.py", line 22, in run_pylint
    from pylint.lint import Run as PylintRun
  File "/home/myhome/.pyenv/versions/3.10.5/lib/python3.10/site-packages/pylint/lint/__init__.py", line 19, in <module>
    from pylint.config.exceptions import ArgumentPreprocessingError
  File "/home/myhome/.pyenv/versions/3.10.5/lib/python3.10/site-packages/pylint/config/__init__.py", line 27, in <module>
    from pylint.config.environment_variable import PYLINTRC
  File "/home/myhome/.pyenv/versions/3.10.5/lib/python3.10/site-packages/pylint/config/environment_variable.py", line 11, in <module>
    PYLINTRC = find_pylintrc()
  File "/home/myhome/.pyenv/versions/3.10.5/lib/python3.10/site-packages/pylint/config/find_default_config_files.py", line 94, in find_pylintrc
    for config_file in find_default_config_files():
  File "/home/myhome/.pyenv/versions/3.10.5/lib/python3.10/site-packages/pylint/config/find_default_config_files.py", line 76, in find_default_config_files
    if home_rc.is_file():
  File "/home/myhome/.pyenv/versions/3.10.5/lib/python3.10/pathlib.py", line 1322, in is_file
    return S_ISREG(self.stat().st_mode)
  File "/home/myhome/.pyenv/versions/3.10.5/lib/python3.10/pathlib.py", line 1097, in stat
    return self._accessor.stat(self, follow_symlinks=follow_symlinks)
PermissionError: [Errno 13] Permission denied: '/home/myhome/.config/pylintrc'

Expected behavior

With the prior version at least 2.13.5, the problem didn't happen. 2.13.5 don't seem to scan default rcfile locations when --rcfile option with valid rcfile path is specified. Similar to 2.13.5, I think the latest version 2.14.4 and later version are also expected to skip scanning the default paths when --rcfile option with valid path is specified.

Pylint version

Used 2.14.4.

`$ pylint --version` didn't work because of the issue.

$ pylint --version
Traceback (most recent call last):
  File "/home/myhome/.pyenv/versions/3.10.5/bin/pylint", line 8, in <module>
    sys.exit(run_pylint())
  File "/home/myhome/.pyenv/versions/3.10.5/lib/python3.10/site-packages/pylint/__init__.py", line 22, in run_pylint
    from pylint.lint import Run as PylintRun
  File "/home/myhome/.pyenv/versions/3.10.5/lib/python3.10/site-packages/pylint/lint/__init__.py", line 19, in <module>
    from pylint.config.exceptions import ArgumentPreprocessingError
  File "/home/myhome/.pyenv/versions/3.10.5/lib/python3.10/site-packages/pylint/config/__init__.py", line 27, in <module>
    from pylint.config.environment_variable import PYLINTRC
  File "/home/myhome/.pyenv/versions/3.10.5/lib/python3.10/site-packages/pylint/config/environment_variable.py", line 11, in <module>
    PYLINTRC = find_pylintrc()
  File "/home/myhome/.pyenv/versions/3.10.5/lib/python3.10/site-packages/pylint/config/find_default_config_files.py", line 94, in find_pylintrc
    for config_file in find_default_config_files():
  File "/home/myhome/.pyenv/versions/3.10.5/lib/python3.10/site-packages/pylint/config/find_default_config_files.py", line 76, in find_default_config_files
    if home_rc.is_file():
  File "/home/myhome/.pyenv/versions/3.10.5/lib/python3.10/pathlib.py", line 1322, in is_file
    return S_ISREG(self.stat().st_mode)
  File "/home/myhome/.pyenv/versions/3.10.5/lib/python3.10/pathlib.py", line 1097, in stat
    return self._accessor.stat(self, follow_symlinks=follow_symlinks)
PermissionError: [Errno 13] Permission denied: '/home/myhome/.config/pylintrc'

OS / Environment

Ubuntu focal by using the docker image via FROM ubuntu:focal-20220531

Additional dependencies

No response

[daisuke834]

Tested at each version

• v2.13.6: OK
• v2.13.9: OK
• v2.14.0: NG (default rc files were scanned and caused the permission error)
• v2.14.2: NG (default rc files were scanned and caused the permission error)
• v2.14.4: NG (default rc files were scanned and caused the permission error)