Cannot pip install version 1.0.x with latest (56.2.0+) version of setuptools

[phillipuniverse]

Simple example with a Dockerfile:

FROM python:3.6-buster
RUN pip install haversine==1.0.2

At time of writing this will install Python 3.6.13 and pip 21.1.1 (this hash on Docker Hub). When this is attempted, you get the following error:

#5 1.940   Downloading haversine-1.0.2.tar.gz (2.2 kB)
#5 2.313     ERROR: Command errored out with exit status 1:
#5 2.313      command: /usr/local/bin/python -c 'import io, os, sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-v4a64w95/haversine_e7df858ff483476cb0f5ea6864a61364/setup.py'"'"'; __file__='"'"'/tmp/pip-install-v4a64w95/haversine_e7df858ff483476cb0f5ea6864a61364/setup.py'"'"';f = getattr(tokenize, '"'"'open'"'"', open)(__file__) if os.path.exists(__file__) else io.StringIO('"'"'from setuptools import setup; setup()'"'"');code = f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' egg_info --egg-base /tmp/pip-pip-egg-info-zhi880hu
#5 2.313          cwd: /tmp/pip-install-v4a64w95/haversine_e7df858ff483476cb0f5ea6864a61364/
#5 2.313     Complete output (26 lines):
#5 2.313     running egg_info
#5 2.313     creating /tmp/pip-pip-egg-info-zhi880hu/haversine.egg-info
#5 2.313     writing /tmp/pip-pip-egg-info-zhi880hu/haversine.egg-info/PKG-INFO
#5 2.313     Traceback (most recent call last):
#5 2.313       File "<string>", line 1, in <module>
#5 2.313       File "/tmp/pip-install-v4a64w95/haversine_e7df858ff483476cb0f5ea6864a61364/setup.py", line 29, in <module>
#5 2.313         'Topic :: Scientific/Engineering :: Mathematics'
#5 2.313       File "/usr/local/lib/python3.6/site-packages/setuptools/__init__.py", line 153, in setup
#5 2.313         return distutils.core.setup(**attrs)
#5 2.313       File "/usr/local/lib/python3.6/distutils/core.py", line 148, in setup
#5 2.313         dist.run_commands()
#5 2.313       File "/usr/local/lib/python3.6/distutils/dist.py", line 955, in run_commands
#5 2.313         self.run_command(cmd)
#5 2.313       File "/usr/local/lib/python3.6/distutils/dist.py", line 974, in run_command
#5 2.313         cmd_obj.run()
#5 2.313       File "/usr/local/lib/python3.6/site-packages/setuptools/command/egg_info.py", line 292, in run
#5 2.313         writer(self, ep.name, os.path.join(self.egg_info, ep.name))
#5 2.313       File "/usr/local/lib/python3.6/site-packages/setuptools/command/egg_info.py", line 628, in write_pkg_info
#5 2.313         metadata.write_pkg_info(cmd.egg_info)
#5 2.313       File "/usr/local/lib/python3.6/distutils/dist.py", line 1106, in write_pkg_info
#5 2.313         self.write_pkg_file(pkg_info)
#5 2.313       File "/usr/local/lib/python3.6/site-packages/setuptools/dist.py", line 172, in write_pkg_file
#5 2.313         license = rfc822_escape(self.get_license())
#5 2.313       File "/usr/local/lib/python3.6/distutils/util.py", line 474, in rfc822_escape
#5 2.313         lines = header.split('\n')
#5 2.313     AttributeError: 'list' object has no attribute 'split'
#5 2.313     ----------------------------------------
#5 2.313 WARNING: Discarding https://files.pythonhosted.org/packages/92/1c/de387b6399070587970fe2007f8b1064d7f948cbb78c07fb61c65cbff560/haversine-1.0.2.tar.gz#sha256=63b9ceb3d2992314fe74948f57afd7d0fb623663ca32f2973565156aa34b9c52 (from https://pypi.org/simple/haversine/). Command errored out with exit status 1: python setup.py egg_info Check the logs for full command output.
#5 2.314 ERROR: Could not find a version that satisfies the requirement haversine==1.0.2 (from versions: 0.1, 0.3, 0.4.0, 0.4.1, 0.4.2, 0.4.3, 0.4.4, 0.4.5, 0.5.0, 1.0.0, 1.0.1, 1.0.2, 2.0.0, 2.1.0, 2.1.1, 2.1.2, 2.2.0, 2.3.0)
#5 2.314 ERROR: No matching distribution found for haversine==1.0.2

This looks to be an unintended consequence of this change in setuptools in the 56.2.0 release notes

[phillipuniverse]

The fix here is to upgrade to a 2.0+ version. The same example with 2.0.0 version works, as does the latest 2.3.0

FROM python:3.6-buster
RUN pip install haversine==2.0.0

FROM python:3.6-buster
RUN pip install haversine==2.3.0