Symlink leads to ValueError in internal call to pathlib

[WarmongeringBeaver]

Issue

Call to black formatting from the vscode extension leads to following error:

  File "/<REDACTED>/lib/python3.11/site-packages/black/__init__.py", line 600, in main
    sources = get_sources(
              ^^^^^^^^^^^^
  File "/<REDACTED>/lib/python3.11/site-packages/black/__init__.py", line 687, in get_sources
    root_relative_path = path.absolute().relative_to(root).as_posix()
                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/<REDACTED>/lib/python3.11/pathlib.py", line 730, in relative_to
    raise ValueError("{!r} is not in the subpath of {!r}"
ValueError: '/projects/static2dynamic/DMSB/data.py' is not in the subpath of '/import/pr_static2dynamic/DMSB' OR one path is relative and the other is absolute.

where /projects/static2dynamic is a symlink pointing to /import/pr_static2dynamic.

Weirdly, calling black . directly from the CLI does not lead to this (nor any) error, so I guess it is related in some way to the extension calls?

Extension info

Version: 2023.6.0 with "black-formatter.importStrategy": "fromEnvironment".

The extension does not indeed call the bundled version:

2023-12-27 11:02:40.853 [info] Version info for formatter running for /import/pr_static2dynamic/DMSB:
black, 23.11.0 (compiled: no)
Python (CPython) 3.11.7

2023-12-27 11:02:40.853 [info] SUPPORTED black>=22.3.0
FOUND black==23.11.0

but the exact same error is thrown when using the bundled version.

CLI info

From my activated Python environment:

black, 23.11.0 (compiled: no)
Python (CPython) 3.11.7

[karthiknadig]

From the call stack this looks like a error in black. Please file it here https://github.com/psf/black/issues