[scikit-image] Numba on pypi

[Matthew Brett]

Hi,

On Thu, Jul 13, 2017 at 9:10 AM, Matthew Brett <matthew.brett at gmail.com> wrote:
> Hi,
>
> On Thu, Jul 13, 2017 at 8:50 AM, Ralf Gommers <ralf.gommers at gmail.com> wrote:
>>
>>
>> On Thu, Jul 13, 2017 at 6:16 PM, Stefan van der Walt <stefanv at berkeley.edu>
>> wrote:
>>>
>>> Hi everyone,
>>>
>>> As many of you know, speed has been a point of contention in
>>> scikit-image for a long time.  We've made a very deliberate decision to
>>> focus on writing high-level, understandable code (via Python and
>>> Cython): both to lower the barrier to entry for newcomers, and to lessen
>>> the burden on maintainers.  But execution time comparisons, vs OpenCV
>>> e.g., left much to be desired.
>>>
>>> I think we have hit a turning point in the road.  Binary wheels for
>>> Numba (actually, llvmlite) were recently uploaded to PyPi, making this
>>> technology available to users on both pip and conda installations.  The
>>> importance of this release on pypi should not be dismissed, and I am
>>> grateful to the numba team and Continuum for making that decision.
>>
>>
>> Agreed. Note that there are no Windows wheels up on PyPI (yet, or not
>> coming?). Given that there are no SciPy wheels for Windows either I don't
>> think that that changes your argument much - people should just use a binary
>> distribution on Windows - but I thought I'd point it out anway.
>
> We might be close to a working scipy wheel - discussion evolving over
> at https://github.com/scipy/scipy/issues/7551#issuecomment-314922271

Following up on my own post - updates on progress for a scipy wheel here:

https://github.com/scipy/scipy/issues/759

> If we do succeed, that would make the lack of a numba wheel for
> Windows much more significant.
>
> Does anyone know Continuum's plans in this matter?  Is the numba
> wheel recipe open-source?

Can anyone comment here?

The basic question is - what would happen if Continuum stopped
supplying a pypi wheel?  If the answer is the standard open source
answer - someone else would take over pretty quickly - that's fine.
Otherwise, it's a problem.

Cheers,

Matthew