pip installs version 0.9.0 on Python 2.7

[tleonhardt]

Last night I put out the 0.8.6 release which works on either Python 2.7 or 3.4+ and contains various bug fixes.

This morning I put out the 0.9.0 release which only supports Python 3.4+. I noticed that when using pip with a Python 2.7 release that pip now attempts to install cmd2 version 0.9.0, which it should not.

We thought we had properly modified setup.py so that version 0.9.0 would only attempt to install on Python 3.4+. Obviously, something is wrong. We need to either fix setup.py or find a way to modify the configuration on PyPI so that on Python 2.7, version 0.8.x installs, but on Python 3.4+ version 0.9.x installs.

[tleonhardt]

@kotfu @kmvanbrunt
This should be regarded as a high-priority issue and we should try to fix it soon because it will affect anyone trying to install the latest version of cmd2 via pip on Python 2.7.

I'm not sure how to fix it and am about to hop on a cross-country flight. But if either of you have any insight, it would be great.

[kotfu]

I’ll have a look.

[kotfu]

Tried following instructions from https://packaging.python.org/guides/dropping-older-python-versions/. Tried it with rc releases. Didn't work. Tried it with 0.9.0.1 and 0.8.6.1 releases. Didn't work.

Tried building wheels and pushing 0.9.1 and 0.8.7 releases. Now pip2 (i.e. pip running in a python 2.7.15 environment) tries to install 0.9.0 as the most recent version supported by python 2. It appears that somehow we got python requires package metadata messed up on our versions, and pypi thinks 0.9.0 is the latest one with support for python 2. I don't know how to fix this.

[LipingMao]

@kotfu Is it possible to delete the 0.9.0 relased package? refer [1].
This problem break the CI job of kolla after cmd2 released to 0.9.0 .

[1]https://stackoverflow.com/questions/20403387/how-to-remove-a-package-from-pypi
[2]https://review.openstack.org/#/q/project:openstack/kolla

[tleonhardt]

I just deleted the 0.9.0 released package. I will delete more releases if necessary

[kotfu]

Provisional testing indicates this may have solved the issue. I'll continue testing.

Thanks @LipingMao for the suggestion! 🥇 👏 🎉