segfault using python bindings

[David Bremner]

Floris Bruynooghe <flub at devork.be> writes:

> On Wed 14 Aug 2019 at 16:20 -0300, David Bremner wrote:
>>
>> Can you remind me what the percieved blockers are for merging into the
>> main notmuch tree? I'm less hung up on python2 compatibility than I used
>> to be, fwiw. I'd be ok with shipping the old python2 bindings in contrib
>> for a bit for those who still need/want them, but concentrate our
>> maintenance effort on the cffi bindings.
>
> IIRC it was mostly about how to support transitioning from one API to
> the other since currently there's no compatibility.  I guess there's
> nothing stopping one from using both APIs in one codebase though, AFAIK
> Xapian handles the required locking.  But some of the discussions
> suggested being able to create a new Message object from an old one etc,
> allowing you to do more mixing during a transition period.  This is the
> part that I said is possible but a lot of work and questionable if no
> one thought they'd be using it.
>

Ah right. Well, given the impending removal of python2 from various
places (e.g. debian testing), I don't think we should be that
fussy/ambitious.

I'd propose

- add the new cffi based bindings, using a distinct name (as you already
  have).

- deprecate the old ones

- port any internal dependencies to the new bindings

- finally drop the old bindings or move them to contrib/ for people slow
  in switching.

I think for the first step we only need a reasonable looking patch
(series?) from you.