Re: [Matplotlib-users] Failed pip install on OSX

[Matthew B. <mat...@be...>]

Hi,

On Sun, Aug 4, 2013 at 7:26 PM, Scott Lasley <sl...@sp...> wrote:
>
> On Aug 4, 2013, at 4:47 PM, Matthew Brett <mat...@be...> wrote:
>
>> Hi,
>>
>> Congratulations on the new release.
>>
>> I just tried installing in a fresh installation of Python 2.7 from Python.org
>>
>> Am I right in thinking the recommended method is:
>>
>>    pip install matplotlib
>>
>> ?  I did this, and then:
>>
>>>>> import matplotlib.pyplot as plt
>> Traceback (most recent call last):
>>  File "<stdin>", line 1, in <module>
>>  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/matplotlib/pyplot.py",
>> line 24, in <module>
>>    import matplotlib.colorbar
>>  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/matplotlib/colorbar.py",
>> line 29, in <module>
>>    import matplotlib.collections as collections
>>  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/matplotlib/collections.py",
>> line 23, in <module>
>>    import matplotlib.backend_bases as backend_bases
>>  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/matplotlib/backend_bases.py",
>> line 50, in <module>
>>    import matplotlib.textpath as textpath
>>  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/matplotlib/textpath.py",
>> line 14, in <module>
>>    from matplotlib.mathtext import MathTextParser
>>  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/matplotlib/mathtext.py",
>> line 62, in <module>
>>    import matplotlib._png as _png
>> ImportError: dlopen(/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/matplotlib/_png.so,
>> 2): Library not loaded: /usr/X11/lib/libpng12.0.dylib
>>  Referenced from:
>> /Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/matplotlib/_png.so
>>  Reason: Incompatible library version: _png.so requires version
>> 42.0.0 or later, but libpng12.0.dylib provides version 36.0.0
>>
>> There were no previous versions of matplotlib installed.  This on OSX 10.6:
>>
>> Python 2.7.5  just installed from python.org
>> X11 installed from the Apple installation disks for 10.6 before `pip
>> install matplotlib`
>> No homebrew etc
>>
>> Any hints about how I should debug this further?
>>
>> Thanks a lot for any help,
>>
>> Matthew
>
> I was able to install numpy 1.7.1 and matplotlib 1.30 under OS X 10.6.8 with X11 version XQuartz 2.3.6 (xorg-server 1.4.2-apple56) and python 2.7.5 64-bit from python.org using pip 1.4.
>
> Have you tried running Software Update?  If you installed X11 after updating to 10.6.8 you can run the combo updater ( http://support.apple.com/kb/DL1399 ) to get the latest X11.   Alternately, you could try installing XQuartz from http://xquartz.macosforge.org/landing/

Yes, the system was up to date before I installed matplotlib.   Just
to check my failing memory, I checked for updates (none), reinstalled
and got the same answer.

The combo updater looks like it's a fast track to the same outcome as
Software update - is it something different?

If Matplotlib is only expected to work for the Quartz installs - is it
worth trying to detect that and warn / error at install time?

Cheers,

Matthew