Bug#1127792: sklearn-pandas: autopkgtest regression with scikit-learn 1.8.0

[roehling at debian.org]

Package: sklearn-pandas
Version: 2.2.0-6
Severity: important
User: debian-python at lists.debian.org
Usertags: scikit-learn-1.8.0

Dear maintainer,

sklearn-pandas has an autopkgtest regression with scikit-learn.
The following architectures failed: amd64, arm64, i386, ppc64el, s390x

Hopefully relevant excerpt from https://ci.debian.net/packages/s/sklearn-pandas/unstable/amd64/68412589/ follows:

 48s tests/test_dataframe_mapper.py::test_input_df_true_next_transformers FAILED
 52s =================================== FAILURES ===================================
 52s E           AttributeError: 'MockTClassifier' object has no attribute '__sklearn_tags__'
 52s E               AttributeError: a: The following error was raised: 'MockTClassifier' object has no attribute '__sklearn_tags__'. It seems that there are no classes that implement `__sklearn_tags__` in the MRO and/or all classes in the MRO call `super().__sklearn_tags__()`. Make sure to inherit from `BaseEstimator` which implements `__sklearn_tags__` (or alternatively define `__sklearn_tags__` but we don't recommend this approach). Note that `BaseEstimator` needs to be on the right side of other Mixins in the inheritance order.
 52s FAILED tests/test_dataframe_mapper.py::test_input_df_true_next_transformers
 52s =================== 1 failed, 72 passed, 4 warnings in 4.17s ===================
 52s run-unit-test        FAIL non-zero exit status 1
 92s run-unit-test        FAIL non-zero exit status 1