NotImplementedError: Union of types not supported

[Dimasbka]

Steps to reproduce:

Python 3.12.12
faust-streaming = 0.13.0
mode-streaming = 0.5.3

After updating mode-streaming (0.4.1 -> 0.5.3), errors occur when describing failure models.

I removed all other dependencies, the minimum script to reproduce the error test.py :

from faust import Record


class SensitiveInfo(Record):
    data: str | list | dict | None
    meta: dict


if __name__ == '__main__':
    print('OK')

Expected behavior

(python3.12)$ python test.py
ok

Actual behavior

(python3.12)$ python test.py
Traceback (most recent call last):
  File "/test/test.py", line 5, in <module>
    class SensitiveInfo(Record):
  File "/test/.venv/lib/python3.12/site-packages/faust/models/record.py", line 115, in __init_subclass__
    super().__init_subclass__(
  File "/test/.venv/lib/python3.12/site-packages/faust/models/base.py", line 298, in __init_subclass__
    finalizer()
  File "/test/.venv/lib/python3.12/site-packages/faust/models/base.py", line 376, in _init_subclass
    options.descriptors = cls._contribute_field_descriptors(cls, options)
                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/test/.venv/lib/python3.12/site-packages/faust/models/record.py", line 286, in _contribute_field_descriptors
    descr.on_model_attached()
  File "/test/.venv/lib/python3.12/site-packages/faust/models/fields.py", line 172, in on_model_attached
    self._to_python = self._compile_type_expression()
                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/test/.venv/lib/python3.12/site-packages/faust/models/fields.py", line 185, in _compile_type_expression
    comprehension = expr.as_function(stacklevel=2)
                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/test/.venv/lib/python3.12/site-packages/faust/models/typing.py", line 675, in as_function
    sourcecode = self.as_string(name=name, argument_name=argument_name)
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/test/.venv/lib/python3.12/site-packages/faust/models/typing.py", line 692, in as_string
    expression = self.as_comprehension(argument_name)
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/test/.venv/lib/python3.12/site-packages/faust/models/typing.py", line 701, in as_comprehension
    return self.build(Variable(argument_name), self.expr)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/test/.venv/lib/python3.12/site-packages/faust/models/typing.py", line 704, in build
    return self._build_expression(var, *args)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/test/.venv/lib/python3.12/site-packages/faust/models/typing.py", line 709, in _build_expression
    res = node.build(var, *type_info.args)
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/test/.venv/lib/python3.12/site-packages/faust/models/typing.py", line 334, in build
    raise NotImplementedError(f"Union of types {args!r} not supported")
NotImplementedError: Union of types (<class 'str'>, <class 'list'>, <class 'dict'>, <class 'NoneType'>) not supported

[wbarnha]

Thanks for the bug report! I'll get this patched ASAP!