[Numpy-discussion] Vendorize tempita

[Charles R Harris]

On Fri, Sep 30, 2016 at 10:10 AM, Charles R Harris <
charlesr.harris at gmail.com> wrote:

>
>
> On Fri, Sep 30, 2016 at 9:48 AM, Evgeni Burovski <
> evgeny.burovskiy at gmail.com> wrote:
>
>> On Fri, Sep 30, 2016 at 6:29 PM, Charles R Harris
>> <charlesr.harris at gmail.com> wrote:
>> >
>> >
>> > On Fri, Sep 30, 2016 at 9:21 AM, Benjamin Root <ben.v.root at gmail.com>
>> wrote:
>> >>
>> >> This is the first I am hearing of tempita (looks to be a templating
>> >> language). How is it a dependency of numpy? Do I now need tempita in
>> order
>> >> to use numpy, or is it a build-time-only dependency?
>> >
>> >
>> > Build time only. The virtue of tempita is that it can be used to
>> generate
>> > cython sources. We could adapt one of our current templating scripts to
>> do
>> > that also, but that would seem to be more work. Note that tempita is
>> > currently included in cython, but the cython folks consider that an
>> > implemention detail that should not be depended upon.
>> >
>> > <snip>
>> >
>> > Chuck
>> >
>> > _______________________________________________
>> > NumPy-Discussion mailing list
>> > NumPy-Discussion at scipy.org
>> > https://mail.scipy.org/mailman/listinfo/numpy-discussion
>> >
>>
>>
>> Ideally, it's packaged in such a way that it's usable for scipy too --
>> at the moment it's used in scipy.sparse via Cython.Tempita + a
>> fallback to system installed tempita if Cython.Tempita is not
>> available (however I'm not sure that fallback is ever exercised).
>> Since scipy needs to support numpy down to 1.8.2, a vendorized copy
>> will not be usable for scipy for quite a while.
>>
>> So, it'd be great to handle it like numpydoc: to have npy_tempita as a
>> small self-contained package with the repo under the numpy
>> organization and include it via a git submodule. Chuck, do you think
>> tempita would need much in terms of maintenance?
>>
>> To put some money where my mouth is, I can offer to do some legwork
>> for packaging it up.
>>
>>
> It might be better to keep tempita and cythonize together so that the
> search path works out right. It is also possible that other scripts might
> be wanted as cythonize is currently restricted to cython files (*.pyx.in,
> *.pxi.in). There are two other templating scripts in numpy/distutils, and
> I think f2py has a dependency on one of those.
>
> If there is a set of tools that would be common to both scipy and numpy,
> having them included as a submodule would be a good idea.
>
>
Hmm, I suppose it just depends on where submodule is, so a npy_tempita
alone would work fine.  There isn't much maintenance needed if you resist
the urge to refactor the code. I removed a six dependency, but that is now
upstream as well.

Chuck
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