[scikit-image] Numba on pypi

[Matthew Brett]

Hi,

On Fri, Jul 14, 2017 at 1:29 AM, Ralf Gommers <ralf.gommers at gmail.com> wrote:
>
>
> On Fri, Jul 14, 2017 at 8:15 PM, Matthew Brett <matthew.brett at gmail.com>
> wrote:
>>
>> 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.
>
>
> Can't read their mind, but did look at the build instructions. Doesn't look
> that hard to build and package, if the need arises (which is unlikely). And
> the current wheels will not disappear. So I don't really see an issue.

Just FYI - after a lot of hard work over at
https://github.com/scipy/scipy/pull/7616 - mostly by Github user
Xoviat - we can now build Scipy wheels for Windows.  I guess they'll
come out at the next Scipy release if not before.

Cheers,

Matthew