`sphinx_toolbox.more_autodoc.typehints' breaks when using 'attrs' default decorator

[AVHopp]

Description

When using attrs to define a class, using the @default decorator is not possible.

Steps to Reproduce

test.py:

from attrs import define, field

@define
class X_decorator:
    value: int = field()

    @value.default
    def _value_default(self) -> int:
        return 3

@define
class X_no_decorator:
    value: int = field(default=3)

conf.py:

extensions = [
    "sphinx_toolbox.more_autodoc.typehints",
    "sphinx.ext.autodoc",
]
master_doc = "index"
autodoc_preserve_defaults = False

index.rst:

.. automodule:: test
    :members:
    :undoc-members:

Actual result:

Performing pip-run sphinx -- -m sphinx . build then creates the correct documentation for the class X_no_decorator, but fails to do so for the X_decorator one due to an error:

Expected result:

I would have expected that one gets the same result for both classes.

Version

• Operating System: MacOS
• Python: 3.9.18
• sphinx-toolbox: 3.5.0

Installation source

pip