[chirp_users] Problem on Linux Mint with Mate desktop

[Dan Smith]

> I am using Mint 20.02 based on Ubuntu 20.04 and had the same issue with old wxPython. I used this to successfully update wxPython and resolve the issue.
> 
> pip3 install -U  -f https://extras.wxpython.org/wxPython4/extras/linux/gtk3/ubuntu-20.04 wxPython

This will work for x86_64 machines, but won't work for systems like the Raspberry Pi. But yeah, this gets you on a newer wxPython, which is good for several reasons. I've added this as an optional step to this page:

https://chirp.danplanet.com/projects/chirp/wiki/ChirpOnLinux

Thanks!

--Dan