Setuptools warnings detected for newer python versions, python-3.8, 3.9

[dol-sen]

build log snipits:

writing manifest file 'Tubes.egg-info/SOURCES.txt'
/usr/lib/python3.8/site-packages/setuptools/dist.py:153: UserWarning: newlines not allowed and will break in the future
warnings.warn("newlines not allowed and will break in the future")
...
running install_scripts
/usr/lib/python3.8/site-packages/setuptools/dist.py:153: UserWarning: newlines not allowed and will break in the future
warnings.warn("newlines not allowed and will break in the future")
...
writing Tubes.egg-info/PKG-INFO
/usr/lib/python3.9/site-packages/setuptools/dist.py:153: UserWarning: newlines not allowed and will break in the future
warnings.warn("newlines not allowed and will break in the future")
writing dependency_links to Tubes.egg-info/dependency_links.txt
writing requirements to Tubes.egg-info/requires.txt
writing top-level names to Tubes.egg-info/top_level.txt
...
running install_egg_info
running egg_info
writing Tubes.egg-info/PKG-INFO
/usr/lib/python3.9/site-packages/setuptools/dist.py:153: UserWarning: newlines not allowed and will break in the future
warnings.warn("newlines not allowed and will break in the future")

##########

Full build logs available at Gentoo's Bugzilla

https://bugs.gentoo.org/797271
https://bugs.gentoo.org/attachment.cgi?id=717297

[dol-sen]

googling the error, I found this link: pypa/setuptools#1390

So, the warning may be due to:
description="""
Flow control and backpressure for event-driven applications.
""",

[webknjaz]

@dol-sen I'm about to send a PR to the setuptools upstream turning that warning into an exception. Just a heads up in case you want to fix this here.

[dol-sen]

Thank you

[graingert]

@webknjaz thanks for the bump! I've got a PR to fix this

while waiting for a release of tubes, I don't think setuptools removing this feature will pose a problem to Tubes users because pypi has Tubes-0.2.0-py2.py3-none-any.whl so anyone with a new enough setuptools probably also has a new enough pip to get the wheel.