[Distutils] ctypes and shared libs, and wheels, oh my!

[Daniel Holth]

This is in the bug tracker already. We need to add the py2-none-arch tags
etc. to Pip's list.
On Jun 11, 2014 12:05 PM, "Chris Barker" <chris.barker at noaa.gov> wrote:

> Folks,
>
> I'm trying to help figure out how to do binary wheels for a package that
> relies on ctypes and a bundles shared lib (dll, .so. etc)
>
> The trick here is that the python code is quite version and platform
> independent: py2 and py3, version 2.7 and 3.3+ (I think)
>
> (it's py_enchant, if anyone is interested:
> http://pythonhosted.org/pyenchant/)
>
> So the trick is that the binary wheel will be platform dependent, but not
> the code itself, so ideally we'd have one wheel, that for instance (and teh
> case at hand) should work on any OS-X box version 10.6 and above, with a
> any of python2.7, 3.3, 3.4 (an up?)
>
> Usually, a binary wheel involves  compiled extensions, and thus is tied to
> a particular python version -- so this is an odd case.
>
> We tried:
>
> pyenchant-1.6.6-py2.py3-none-macosx_10_6_intel.whl
>
> which seems to be saying: any version of python2 or python 3, but only on
> macosx 10.6
>
> but trying to install that on my machine (py2.7, os-x 10.6) gives:
>
> pyenchant-1.6.6-py2.py3-none-macosx_10_6_intel.whl is not a supported
> wheel on this platform.
>
> (side note: it would be really great if that could be a more useful
> message -- what part of the file name didn't match? I know that's a trick,
> as there is a whole pile of heuristics to go through, but maybe a way to
> dump that process would be helpful...)
>
> Now, this may, in fat be tied to CPython (I have no idea if ctypes
> is available on pypy or jython or IronPython...). So I tried:
>
> pyenchant-1.6.6-cp27-none-macosx_10_6_intel.whl
>
> that does, indeed, install on my system.
>
> Also:
>
> pyenchant-1.6.6-cp27.cp33-none-macosx_10_6_intel.whl
>
> works.
>
> As 2.7 is really the only py2 that much matters, no biggie, but is there a
> way to get 3.3 and 3.4 and ??? all at once (I don't have py3 on that
> machine, so didn't test that...)
>
> So: how should this be done? Is the above the best option there is?
>
> Thanks,
>   -Chris
>
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> --
>
> Christopher Barker, Ph.D.
> Oceanographer
>
> Emergency Response Division
> NOAA/NOS/OR&R            (206) 526-6959   voice
> 7600 Sand Point Way NE   (206) 526-6329   fax
> Seattle, WA  98115       (206) 526-6317   main reception
>
> Chris.Barker at noaa.gov
>
> _______________________________________________
> Distutils-SIG maillist  -  Distutils-SIG at python.org
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>
>
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