Importing PyQt5* fails on Mac

[Phil Thompson]

Did you mean Xcode 15 and not 14?

Can you point me to the links you found describing the problem.

I've re-built the PyQt5-Qt5 wheel using Xcode 14.3.1 and put it up on 
the local PyPI server. I think it fixes the problem so please test.

Thanks,
Phil

On 02/11/2023 19:16, Grzegorz Bokota wrote:
> Googling provides information that when code is build using XCode 14 
> with
> c++17 mode, it will not work with macOS Ventura arm64 (lack of symbols 
> in
> libc++) . Did PyQt5 require  c++17, or could it be compiled with an 
> older
> version?
> 
> Regards,
> Grzegorz Bokota
> 
> czw., 2 lis 2023 o 19:34 Grzegorz Bokota <g.bokota at mimuw.edu.pl> 
> napisał(a):
> 
>> Dear Phil,
>> I just tested PyQt5 wheels on macos 13.2.1 and got:
>> 
>> In [2]: from PyQt5.QtWidgets import QApplication, QLabel
>>    ...:
>> ---------------------------------------------------------------------------
>> ImportError                               Traceback (most recent call 
>> last)
>> Cell In[2], line 1
>> ----> 1 from PyQt5.QtWidgets import QApplication, QLabel
>> 
>> ImportError:
>> dlopen(/Users/sobolp/micromamba/envs/napari-419/lib/python3.11/site-packages/PyQt5/
>> QtWidgets.abi3.so, 0x0002): Symbol not found:
>> __ZTVNSt3__13pmr25monotonic_buffer_resourceE
>>   Referenced from: <8239A761-D3BE-396C-A445-F703655273B5>
>> /Users/sobolp/micromamba/envs/napari-419/lib/python3.11/site-packages/PyQt5/Qt5/lib/QtWidgets.framework/Versions/5/QtWidgets
>>   Expected in:     <3EE92404-8FC3-374B-A598-D5C9A8CD64B5>
>> /usr/lib/libc++.1.dylib
>> 
>> The wheels are tagged as 11.0 compatible. Also, wheels on from 
>> riverbank
>> pypi (https://www.riverbankcomputing.com/pypi/) are working without 
>> any
>> problem on this machine. could you chek what may have men changed and
>> rebuilt the wheels?
>> 
>> Regards,
>> Grzegorz Bokota
>> 
>> 
>> 
>> 
>> wt., 31 paź 2023 o 11:41 Phil Thompson <phil at riverbankcomputing.com>
>> napisał(a):
>> 
>>> On 31/10/2023 08:05, ullix wrote:
>>> > This one-liner fails on Mac (macbook air M1, OS Big Sur 11.6):
>>> >
>>> >    fromPyQt5.QtWidgetsimport*
>>> >
>>> > with this output on Py3.10 and same on Py3.11:
>>> >
>>> >    python3.10 test4mac.py Exception:
>>> >
>>> > dlopen(/opt/homebrew/lib/python3.10/site-packages/PyQt5/
>>> QtWidgets.abi3.so,
>>> >    2): Symbol not found: __ZTVNSt3__13pmr25monotonic_buffer_resourceE
>>> >    Referenced from:
>>> >
>>> >
>>> /opt/homebrew/lib/python3.10/site-packages/PyQt5/Qt5/lib/QtCore.framework/Versions/5/QtCore
>>> >    Expected in: /usr/lib/libc++.1.dylib in
>>> >
>>> >
>>> /opt/homebrew/lib/python3.10/site-packages/PyQt5/Qt5/lib/QtCore.framework/Versions/5/QtCore
>>> >    python3.11 test4mac.py Exception:
>>> >
>>> >
>>> dlopen(/Users/alkaddy/Library/Python/3.11/lib/python/site-packages/PyQt5/
>>> QtWidgets.abi3.so,
>>> >    2): Symbol not found: __ZTVNSt3__13pmr25monotonic_buffer_resourceE
>>> >    Referenced from:
>>> >
>>> >
>>> /Users/alkady/Library/Python/3.11/lib/python/site-packages/PyQt5/Qt5/lib/QtCore.framework/Versions/5/QtCore
>>> >    Expected in: /usr/lib/libc++.1.dylib in
>>> >
>>> >
>>> /Users/alesandro/Library/Python/3.11/lib/python/site-packages/PyQt5/Qt5/lib/QtCore.framework/Versions/5/QtCore
>>> >
>>> >
>>> > The tiny test program is attached.
>>> > The PyQt stuff had been installed with:
>>> >
>>> >    |python3 -m pip uninstall PyQt5 PyQt5-sip|
>>> >
>>> > Any guidance? Thanks.
>>> > ullix
>>> 
>>> It's possibly an issue with your version of macOS. The Qt wheels are
>>> built with Xcode 15 on Ventura.
>>> 
>>> Phil
>>> 
>>