tulipgui-python under Anaconda and macOS, libpng issue (Python 2.7)

[renoust]

Hi,

I have an issue with libpng with Anaconda + tulipogl in macOS, any idea?
It works fine with the native python.

Python 2.7.13 |Anaconda 4.4.0 (x86_64)| (default, Dec 20 2016, 23:05:08) 
[GCC 4.2.1 Compatible Apple LLVM 6.0 (clang-600.0.57)] on darwin
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>>> from tulipgui import *
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/work/Anaconda2/anaconda/lib/python2.7/site-packages/tulipgui/__init__.py", line 25, in <module>
    from tulipogl import tlpogl
  File "/work/Anaconda2/anaconda/lib/python2.7/site-packages/tulipogl/__init__.py", line 32, in <module>
    import _tulipogl
ImportError: dlopen(/work/Anaconda2/anaconda/lib/python2.7/site-packages/tulipogl/native/_tulipogl.so, 2): Symbol not found: _inflateValidate
  Referenced from: /work/Anaconda2/anaconda/lib/python2.7/site-packages/tulipogl/native/libpng16.16.dylib
  Expected in: /work/Anaconda2/anaconda/lib/python2.7/lib-dynload/../../libz.1.dylib
 in /work/Anaconda2/anaconda/lib/python2.7/site-packages/tulipogl/native/libpng16.16.dylib

[jason-vallet]

Hey,
Is your libz.1.dylib reachable from Anaconda?

[anlambert]

Hey,

I fixed that issue in 7c3b81b but tulip-python 5.0 packages were already pushed on PyPi at that time ...
Maybe I will push a 5.0.0.post1 as some bugs have been found since then (especially on MacOS) but I need to find some time to do it.

[renoust]

Ooops, I didn't see this commit! (We were trying out from the pypi packages at a tutorial)
Thanks a lot!