[Freewx-maint] Start building GTK+3 packages

[Scott Talbert]

On Mon, 5 Mar 2018, Olly Betts wrote:

>>> Are you thinking to just provide wxpython built against the GTK3
>>> variant?
>>
>> Yes, that's what I was thinking.  And maybe even migrate everyone to
>> wxpython4.0 and we could retire 3.0, but that may be wishful thinking.  I do
>> know some upstreams are working on this already though.
>
> For GTK3 we just need to upload a new package version which is built to
> use the GTK3 wxwidgets instead of the GTK2 one, and that will switch all
> dependent packages.  There may be some issues due to bugs in wx GTK3
> support to deal with as a result, but there's not any porting work as
> such to do, unlike moving to wxpython4.0.
>
> I suspect you'd struggle to get everyone onto wxpython4.0 by buster,
> as there seem to be a lot of wxpython rdeps which aren't actively
> maintained upstream (or in debian for that matter).  Some of these
> probably deserve to be RMed, but some are probably actually useful
> and without better maintained alternatives, which makes removal a
> bit more contentious.

Yes, indeed there are probably quite a few dead packages.

>> Yes, I generally only do builds with sbuild myself, so I would be okay with
>> just removing the cache if you think that's better.
>
> Sure, feel free to cull the --cache-file machinery then.

Done (updated the PR).

Scott