> Installed on this Slackware-14.2/x86_64 workstation with python-3.9.1 are: > python-setuptools-22.0.5-x86_64-1 I just ran into this recently, I don't recall the actual source but it was the version of setuptools having been so old. Your version is from Jun 3, 2016... Update it, that was what worked for me. jlc