0.4: pep517 build issue

[kloczek]

I'm trying to package your module as an rpm package. So I'm using the typical PEP517 based build, install and test cycle used on building packages from non-root account.

• python3 -sBm build -w
• install .whl file in </install/prefix>
• run pytest with PYTHONPATH pointing to sitearch and sitelib inside </install/prefix>

Looks like pip fails on install generated .whl archive.
I'm using python 3.8.12.

+ /usr/bin/python3 -sBm build -w
* Creating venv isolated environment...
* Installing packages in isolated environment... (setuptools >= 40.8.0, wheel)
* Getting dependencies for wheel...
running egg_info
creating pytest_toolbox.egg-info
writing manifest file 'pytest_toolbox.egg-info/SOURCES.txt'
writing manifest file 'pytest_toolbox.egg-info/SOURCES.txt'
* Installing packages in isolated environment... (wheel)
* Building wheel...
running bdist_wheel
running build
running build_py
creating build
creating build/lib
creating build/lib/pytest_toolbox
copying pytest_toolbox/__init__.py -> build/lib/pytest_toolbox
copying pytest_toolbox/main.py -> build/lib/pytest_toolbox
copying pytest_toolbox/version.py -> build/lib/pytest_toolbox
copying pytest_toolbox/comparison.py -> build/lib/pytest_toolbox
running egg_info
writing manifest file 'pytest_toolbox.egg-info/SOURCES.txt'
running install
running install_lib
creating build/bdist.linux-x86_64
creating build/bdist.linux-x86_64/wheel
creating build/bdist.linux-x86_64/wheel/pytest_toolbox
running install_egg_info
Copying pytest_toolbox.egg-info to build/bdist.linux-x86_64/wheel/pytest_toolbox-0.5-py3.8.egg-info
running install_scripts
Successfully built pytest_toolbox-0.5-py35+-none-any.whl
+ RPM_EC=0
++ jobs -p
+ exit 0
Executing(%install): /bin/sh -e /var/tmp/rpm-tmp.Z0qJp0
+ umask 022
+ cd /home/tkloczko/rpmbuild/BUILD
+ '[' /home/tkloczko/rpmbuild/BUILDROOT/python-pytest-toolbox-0.4-10.fc35.x86_64 '!=' / ']'
+ rm -rf /home/tkloczko/rpmbuild/BUILDROOT/python-pytest-toolbox-0.4-10.fc35.x86_64
+ /usr/bin/mkdir -p /home/tkloczko/rpmbuild/BUILDROOT/python-pytest-toolbox-0.4-10.fc35.x86_64
+ cd pytest-toolbox-0.4
+ /usr/bin/python3 -sBm pip install -I dist/pytest_toolbox-0.5-py35+-none-any.whl --root /home/tkloczko/rpmbuild/BUILDROOT/python-pytest-toolbox-0.4-10.fc35.x86_64 --no-deps --no-index --no-warn-script-location
ERROR: pytest_toolbox-0.5-py35+-none-any.whl is not a supported wheel on this platform.