Ubuntu 16.04: can't compile stable branch

[Matt Harbison]

On Thu, 24 Oct 2019 13:21:47 -0400, Uwe Brauer <oub at mat.ucm.es> wrote:

>
>
> Hi
>
> I am running Ubuntu 16.04 and just pulled.
>
> I can compile (make deb) the default branch (d782cce137fd) without
> difficulties.
>
> But when I try the same for the stable branch (4565a0afc289) I receive
> an error which I attach.
>
> Regards
>
> Uwe Brauer

It looks like you're building with py2, and the latest packaging  
apparently only supports py3.  Try updating to '7574ccd87200^' (note the  
hat) and building that.