[Numpy-discussion] How do I ensure numpy headers are present in setup.py?

[Erik Tollerud]

Hmm, unfortunate.  So the best approach then is probably just to tell
people to install numpy first, then my package?

On Fri, Apr 2, 2010 at 12:06 PM, Robert Kern <robert.kern at gmail.com> wrote:
> On Fri, Apr 2, 2010 at 13:03, Erik Tollerud <erik.tollerud at gmail.com> wrote:
>> I am writing a setup.py file for a package that will use cython with
>> numpy integration.  This of course requires the numpy header files,
>> which I am including by using numpy.get_includes in the setup.py file
>> below.  The problem is for users that have not installed numpy before
>> installing this package.    If they have setuptools installed, the
>> behavior I would want would be for numpy to be downloaded and then the
>> setup script should be able to get at the headers even if it doesn't
>> install numpy until after this package is installed.  But that doesn't
>> work - I have to import numpy in the setup script, which fails if it
>> is not yet installed.  So How can I get the behavior I want?
>
> You can't, not without some hacks to distutils. This is a basic
> problem with the way setuptools uses arguments to setup() to get the
> dependencies.
>
> --
> Robert Kern
>
> "I have come to believe that the whole world is an enigma, a harmless
> enigma that is made terrible by our own mad attempt to interpret it as
> though it had an underlying truth."
>  -- Umberto Eco
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