Bug#885265: Bug#936299: chirp: Python2 removal in sid/bullseye

[Christoph Berg <myon@debian.org>]

Re: Moritz Muehlenhoff 2020-03-27 <[🔎] 20200327220044.s7cmyqmlnevtyn2c@inutil.org>
> > There's a py3 branch in upstream Hg that's activish. I haven't tried
> > it yet, but it looks promising. I'll give it a try over the weekend
> > and report back here.

I've pushed the new branch to our git, but it's still so broken that I
don't think uploading makes sense.

I mailed some basic patches to upstream, hopefully they can get this
working soon.

Christoph