[Numpy-discussion] 1.8.1rc1 on sourceforge.

[Matthew Brett]

Hi,

On Mon, Mar 10, 2014 at 12:37 PM, Chris Barker <chris.barker at noaa.gov> wrote:
> On Mon, Mar 10, 2014 at 10:27 AM, Jens Nielsen <jenshnielsen at gmail.com>
> wrote:
>>
>> If someone is running a brew python and does "pip install numpy"  will pip
>> find a binary wheel that will then not work? That would be bad, but maybe
>> not our problem -- brew users should be using brew to build numpy anyway.
>>
>> No that is not how homebrew works. Brew does not pack anything that pip
>> installable: https://github.com/Homebrew/homebrew/wiki/Homebrew-and-Python
>> so that would be a big issue. Especially since installing numpy with pip
>> and brew python just works without any problem when building from source.
>>
>> There are unofficial brew taps (channels) with python packages but this
>> not the recommended way.
>
>
> OK, then I'll re-phrase:
>
> Brew users should be building from source anyway, even if they use pip to do
> it.
>
> But it would be bad if they had to go out of their way to do that -- I've
> lost track of pip's default behavior in this regard.

We should be fine for homebrew. I believe:

1) The wheels work for homebrew as well
2) Homebrew won't pick them up by default at the moment

Homebrew python has a more specific architecture version then the
python.org python or system python:

$ /usr/local/Cellar/python/2.7.6/bin/python -c "import distutils.util;
print(distutils.util.get_platform())"
macosx-10.9-x86_64

So - for now - pip won't recognize the 10.6_intel wheel as matching
the required 10.9_x86_64 suffix on the wheel (can be solved by
renaming the file as further up the thread).

But - in any case - the wheels work fine in homebrew:

    mkvirtualenv homebrew-2.7 --python=/usr/local/Cellar/python/2.7.6/bin/python
    pip install nose
    # this doesn't see the wheel - because of the platform tag
    # starts to download and install from source
    pip install --pre --find-links . numpy
    # this works
    pip install numpy-1.8.1rc1-cp27-none-macosx_10_6_intel.whl
    # tests all pass
    python -c 'import numpy; numpy.test()'
    # We're picking up the right numpy
    python -c 'import numpy; print(numpy.__file__)'
    deactivate
    # same for 3.3
    mkvirtualenv homebrew-3.3
--python=/usr/local/Cellar/python3/3.3.5/bin/python3
    pip install nose
    python -c 'import numpy'
    pip install --pre --find-links . numpy
    pip install numpy-1.8.1rc1-cp33-cp33m-macosx_10_6_intel.whl
    python -c 'import numpy; numpy.test()'

So I think we're good.  We should surely set up automated testing to
assure ourselves that this is still true, when there's time, it
shouldn't take very long.

Cheers,

Matthew