Invalid Cross-device Link

[Kurt-von-Laven]

The pre-commit hook sometimes crashes when run from the Windows file system within Windows Subsystem for Linux (WSL):

Update markdown table-of-contents.............................................Failed
 - hook id: md-toc
 - exit code: 1
Traceback (most recent call last):
File "~/.cache/pre-commit/repogo0t_l7x/py_env-python3.10.4/lib/python3.10/site-packages/md_toc/__main__.py", line 35, in main
                                                                                                                          result = args.func(args)
File "~/.cache/pre-commit/repogo0t_l7x/py_env-python3.10.4/lib/python3.10/site-packages/md_toc/cli.py", line 77, in write_toc
                                                                                                                          write_strings_on_files_between_markers(
File "~/.cache/pre-commit/repogo0t_l7x/py_env-python3.10.4/lib/python3.10/site-packages/md_toc/api.py", line 141, in write_strings_on_files_between_markers
                                                                                                                          write_string_on_file_between_markers(f, strings[file_id], marker, newline_string)
File "~/.cache/pre-commit/repogo0t_l7x/py_env-python3.10.4/lib/python3.10/site-packages/md_toc/api.py", line 83, in write_string_on_file_between_markers
                                                                                                                          fpyutils.filelines.remove_line_interval(
File "~/.cache/pre-commit/repogo0t_l7x/py_env-python3.10.4/lib/python3.10/site-packages/fpyutils/filelines.py", line 242, in remove_line_interval
                                                                                                                          with atomic_write(output_file, overwrite=True) as f:
File "~/.asdf/installs/python/3.10.4/lib/python3.10/contextlib.py", line 142, in __exit__
                                                                                                                          next(self.gen)
File "~/.cache/pre-commit/repogo0t_l7x/py_env-python3.10.4/lib/python3.10/site-packages/atomicwrites/__init__.py", line 169, in _open
                                                                                                                          self.commit(f)
File "~/.cache/pre-commit/repogo0t_l7x/py_env-python3.10.4/lib/python3.10/site-packages/atomicwrites/__init__.py", line 202, in commit
                                                                                                                          replace_atomic(f.name, self._path)
File "~/.cache/pre-commit/repogo0t_l7x/py_env-python3.10.4/lib/python3.10/site-packages/atomicwrites/__init__.py", line 99, in replace_atomic
                                                                                                                          return _replace_atomic(src, dst)
File "~/.cache/pre-commit/repogo0t_l7x/py_env-python3.10.4/lib/python3.10/site-packages/atomicwrites/__init__.py", line 55, in _replace_atomic
                                                                                                                          os.rename(src, dst)
OSError: [Errno 18] Invalid cross-device link: '/mnt/c/Users/<username>/source/repos/scribemd-uwp/tmpkpv7awhg' -> 'README.md'

I am not yet certain under what circumstances this issue occurs; if it's happening to others I suggest starting by re-running the hook.

[frnmst]

This has something to do with atomicwites which is used by fpyutils in the write operation. See this comment in atomicwites documentation:

Windows support, although not well-tested.

Does this happen occasionally, for example when the readme file changed or is it totally random?

[Kurt-von-Laven]

That sounds like the right idea, yeah. Indeed, it most recently happened when I modified the README within WSL on the Windows file system. I have seen it before, most likely in the same scenario, but it’s been too long for me to be sure.