devel/py-poetry-core build fails

[Marc Baudoin <babafou%babafou.eu.org@localhost>]

Hi,

On NetBSD/amd64 9.3 with up to date pkgsrc:

* Building wheel...

Traceback (most recent call last):
  File "/usr/pkg/lib/python3.10/site-packages/pyproject_hooks/_impl.py", line 323, in _call_hook
    raise BackendInvalid(
pyproject_hooks._impl.BackendInvalid: Backend was not loaded from backend-path

ERROR Backend operation failed: BackendInvalid('Backend was not loaded from backend-path')
*** Error code 1

Stop.
make[1]: stopped in /usr/pkgsrc/devel/py-poetry-core
*** Error code 1

Stop.
make: stopped in /usr/pkgsrc/devel/py-poetry-core

Is anybody else having the same problem?