Compiling cython in venv for Apple M1 chip

[Josef Hamelink]

Hello, I would like to use Kivy for some of my university projects and I tried to install it using the default instructions found on kivy.org, but there seems to be something missing. I am using vscode. This is the output I get when running the default "Hello world!" program:

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[INFO   ] [Logger      ] Record log in /Users/jdhamelink/.kivy/logs/kivy_21-11-16_6.txt

[INFO   ] [Kivy        ] v2.0.0

[INFO   ] [Kivy        ] Installed at "/Users/jdhamelink/Local/UNO_X/kivy_venv/lib/python3.8/site-packages/kivy/__init__.py"

[INFO   ] [Python      ] v3.8.9 (default, Aug  3 2021, 19:21:54) 

[Clang 13.0.0 (clang-1300.0.29.3)]

[INFO   ] [Python      ] Interpreter at "/Users/jdhamelink/Local/UNO_X/kivy_venv/bin/python"

[ERROR  ] [Clock       ] Unable to import kivy._clock. Have you perhaps forgotten to compile kivy? Kivy contains Cython code which needs to be compiled. A missing kivy._clock often indicates the Cython code has not been compiled. Please follow the installation instructions and make sure to compile Kivy

 Traceback (most recent call last):

   File "/Users/jdhamelink/Local/UNO_X/main.py", line 1, in <module>

     from kivy.app import App

   File "/Users/jdhamelink/Local/UNO_X/kivy_venv/lib/python3.8/site-packages/kivy/app.py", line 411, in <module>

     from kivy.base import runTouchApp, async_runTouchApp, stopTouchApp

   File "/Users/jdhamelink/Local/UNO_X/kivy_venv/lib/python3.8/site-packages/kivy/base.py", line 28, in <module>

     from kivy.clock import Clock

   File "/Users/jdhamelink/Local/UNO_X/kivy_venv/lib/python3.8/site-packages/kivy/clock.py", line 466, in <module>

     from kivy._clock import CyClockBase, ClockEvent, FreeClockEvent, \

 ImportError: dlopen(/Users/jdhamelink/Local/UNO_X/kivy_venv/lib/python3.8/site-packages/kivy/_clock.cpython-38-darwin.so, 0x0002): tried: '/Users/jdhamelink/Local/UNO_X/kivy_venv/lib/python3.8/site-packages/kivy/_clock.cpython-38-darwin.so' (mach-o file, but is an incompatible architecture (have 'x86_64', need 'arm64e')), '/usr/local/lib/_clock.cpython-38-darwin.so' (no such file), '/usr/lib/_clock.cpython-38-darwin.so' (no such file)

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I couldn't really find any clear solutions to this problem. I think the core issue here is explained in the line "(mach-o file ... need 'arm64e')", but I don't know what this means and how to fix the issue. Can someone please help me?

[Elliot Garbus]

I don’t have an M1, but you will need to build from source.  I found this: https://stackoverflow.com/questions/69802436/install-kivy-on-macos-12-monterey-with-m1-chip/69958851

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[Josef Hamelink]

Hi Elliot,

I think it worked. I did have to remove the venv folder inside my project directory thouh. Also, when running pytest kivy/tests in terminal, it said that 28 failed, 724 passed, 89 skipped in 34.89s. I hope this is good enough for now. If not I would love to hear what else might be the issue. In any case, when running my main.py function inside vscode, which is located outside of the cloned kivy repository folder, I am greeted with a lovely kivy window displaying a 'Hello world!'.

Thank you very much,

Kind regards,

Josef