[Python] How to use custom log handler in pytest

I would like to use rich.logging.RichHandler from the rich library to handle all captured logs in pytest.

Say I have two files,

# library.py
import logging

logger = logging.getLogger(__name__)
logger.addHandler(logging.NullHandler())


def func():
x = {"value": 5}
logger.info(x)


# test_library.py
from library import func


def test_func():
func()
assert False


Running pytest shows the log message as expected, but I want it formatted by rich so I tried to put the following into conftest.py:

import logging
import pytest
from rich.logging import RichHandler


@pytest.hookimpl
def pytest_configure(config: pytest.Config):
logger = logging.getLogger()
logger.addHandler(RichHandler())


which results in the following output:

Under "captured stdout call" the log message appears as formatted by the RichHandler but below that it appears a second time under "captured log call" which is not what I want. Instead the message below "captured log call" should be formatted by the RichHandler and should not appear twice.

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