[Bug]: pyparsing and packaging version conflict

[yardasol]

Expected behavior
When installing SaltProc in an fresh conda environment using python setup.py install --user, the software installs successfully.

Describe the bug
Installing SaltProc in a fresh conda environment using python setup.py install --user, the software fails with the following message:

error: pyparsing 3.0.3 is installed but pyparsing<3,>=2.0.2 is required by {'packaging'}

To Reproduce
Steps to reproduce the behavior:

1. Activate conda
2. Create an fresh conda environment with python installed
3. Run python setup.py install --user

conda activate
conda create -n saltproc-test python=3.8 --yes
cd saltproc; python setup.py install --user

Other details
It seems that this bug is new as of today. If we go to the PyPI page for packaging we can see that on Oct. 29 (today), there is the following changelog:

Update pin to pyparsing to exclude 3.0.0.
I've also attached a screenshot below

I do not run into this issue if I initialize the environment from environment.yml. Doing so installs packaging=21.0, which is the version immediately before today's release.

System Specifications:

• Software Version: Python 3.8.12, pip 21.3.1, packaging 21.2
• Platform/OS: Ubuntu 21.04
• Subsystem: conda 4.10.3

How can this issue be closed?
This issue can be closed when a patch has been made that forces pyparsing<3.0.0

[yardasol]

Update: Found this bug on packaging issue tracker.

[yardasol]

Update

The 3.0.0 exclusion has been updated to 3.0.5 as of November 17. I haven't had any further issues with using setup.py. Tentativley closing this issue. If it comes up again, we can open it again or make a new issue.