singledispatchmethod + classmethod causes .wire method to crash

[ScriptHound]

Version: dependency-injector==4.48.2, Python version: 3.11.14

My project has the following structure:

/

• http
• • api.py
• other_module
• • dependencies.py
• schemas
• • my_schemas.py
    main.py

I want to wire things that are inside api.py and dependencies and for some reason python-dependency-injector tries to inspect my_schemas.py where I have a model like this:

class MyModel(BaseModel):
    field: int

    @classmethod
    @singledispatchmethod
    def model_validate(cls, param: ParamClass):
        ...

  File "/root/.venv/lib/python3.11/site-packages/dependency_injector/wiring.py", line 493, in wire
    _patch_method(
  File "/root/.venv/lib/python3.11/site-packages/dependency_injector/wiring.py", line 599, in _patch_method
    reference_injections, reference_closing = _fetch_reference_injections(fn)
                                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/root/.venv/lib/python3.11/site-packages/dependency_injector/wiring.py", line 707, in _fetch_reference_injections
    signature = inspect.signature(fn)
                ^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.11/inspect.py", line 3263, in signature
    return Signature.from_callable(obj, follow_wrapped=follow_wrapped,
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.11/inspect.py", line 3011, in from_callable
    return _signature_from_callable(obj, sigcls=cls,
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.11/inspect.py", line 2456, in _signature_from_callable
    raise TypeError('{!r} is not a callable object'.format(obj))

TypeError: <functools.singledispatchmethod object at 0x7f7c7489a050> is not a callable object

Is there any way to tell python-dependency-injector to not inspect certain classes or methods? I theres no such functionality I can try add that or fix the bug

P.S. dont ask me why am I using singledispatchmethod please

[ZipFile]

Could you provide fully-reproducible example? I see there is DI in stack trace but there is no @injects and Provides in yours.

Also, IIRC singledispatchmethod must be outer-most decorator, which is not the case in your example, this might interfere with function unwrapping logic we have (detecting original signature).