RuntimeError: absolute path '.../dataclasses.py' is not a descendant of the current working directory or of the system's python library

[Lucas-C]

Hi.

In fpdf2 we have been using pdoc3 for several years:
thank you for maintaining this great tool!

I noticed a warning in our execution log:
https://github.com/py-pdf/fpdf2/actions/runs/13482969652/job/37670544099?pr=1374

Traceback (most recent call last):
  File "/opt/hostedtoolcache/Python/3.13.2/x64/lib/python3.13/site-packages/pdoc/html_helpers.py", line 569, in format_git_link
    path = _project_relative_path(abs_path)
  File "/opt/hostedtoolcache/Python/3.13.2/x64/lib/python3.13/site-packages/pdoc/html_helpers.py", line 635, in _project_relative_path
    raise RuntimeError(
    ...<2 lines>...
    )
RuntimeError: absolute path '/opt/hostedtoolcache/Python/3.13.2/x64/lib/python3.13/dataclasses.py' is not a descendant of the current working directory or of the system's python library.

I do not quite understand the origin of this stacktrace,
but I suspect that's maybe due to this usage of dataclasses.replace as a method:
https://github.com/py-pdf/fpdf2/blob/2.8.2/fpdf/fonts.py#L75

Do you know how we could prevent this error to be raised?

[kernc]

pdoc/pdoc/html_helpers.py

Lines 628 to 638 in 9e4f6ad

	from sysconfig import get_path
	libdir = get_path("platlib")
	for prefix_path in (_git_project_root() or os.getcwd(), libdir):
	common_path = os.path.commonpath([prefix_path, absolute_path])
	if os.path.samefile(common_path, prefix_path):
	# absolute_path is a descendant of prefix_path
	return os.path.relpath(absolute_path, prefix_path)
	raise RuntimeError(
	f"absolute path {absolute_path!r} is not a descendant of the current working directory "
	"or of the system's python library."
	)

The question seems to be, why isn't '/opt/hostedtoolcache/Python/3.13.2/x64/lib/python3.13/' recognized/configured as 'platlib' path.