A demonstration of setuptools issue 967

Dockerfile

FROM ubuntu:16.04
RUN apt-get update && apt-get install -y python-virtualenv
WORKDIR /issue967
COPY run.sh setup.py /issue967/
CMD ["/bin/bash", "run.sh"]

run.sh

#!/bin/bash
set -ex

#PYTHON=/usr/bin/python2
PYTHON=/usr/bin/python3

virtualenv -p "$PYTHON" venv
source venv/bin/activate
python --version
pip list
python setup.py check

setup.py

from setuptools import setup

setup(
    name='issue967',
    version='0.0.0',
    author='jwodder',
    author_email='issue967@varonathe.org',
    python_requires='==3.*',
    description='A demonstration of setuptools issue 967',
    url='https://github.com/pypa/setuptools/issues/967',
)