Hello,
I was installing sysmontask from source code and noticed when I ran it it refused to run with the error:
'version 1.x.x is not valid'
also told me to look at python's PEP440 or whatever. Decided nah I'm curious so I went in and found what it was complaining about. apparently when running setup.py it looks for the version string and when it comes across '1.x.x' it gets confused then fails. setting that to a valid version number fixed it. Hope this helps! :D
Kevin M.
SFMG2001
Manjaro Linux