Explicitly mark dependency on setuptools

[Eric-Arellano]

pytest-rerunfailures explicitly imports pkg_resources, which is only provided via setuptools:

pytest-rerunfailures/pytest_rerunfailures.py

Line 1 in e3eae03

import pkg_resources

While most Python distributions come bundled with this distribution, not all do and it is more robust to make explicit this dependency in setup.py. Otherwise, if the distribution does not have setuptools already installed, pytest will fail at runtime because it cannot find pkg_resources.

The version is pinned at >=40.0 to match the version used in pytest: https://github.com/pytest-dev/pytest/blob/55a58bcd3d15887610e1303f4076401bd16ba742/setup.py#L22

(P.S. Thanks for this plugin! It's exactly what I need for my project 🎉)

[sallner]

Thanks for filing this PR.

[sallner]

@Eric-Arellano I created a new release of the package. https://pypi.org/project/pytest-rerunfailures/8.0/

[Eric-Arellano]

Thank you @sallner! I appreciate you merging this and promptly releasing!