Add iOS builds #281
Add iOS builds #281
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Looks like its build fine here on GH 👍 |
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The problem with iOS is that you can't just run a Python interpreter, so you always need to create an app that bundles the Python interpreter with your Python library. It should be possible through either BeeWare (the maintainer is awesome and has done a lot of the work making iOS builds possible at all) or Kivy (no idea about them, never used it) to automatically create an app, launch Xcode, and run tests on the iOS simulator. I thought it might be complicated, but the BeeWare docs say:
So that might be worth exploring! |
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Found this discussion on cibuildwheel pypa/cibuildwheel#2363 that make it sound like something is possible. |
| curl https://files.pythonhosted.org/packages/8b/f1/672d303ddf17c24fc83afd712316fda78dc6fce1cd53011b839483e1ecc8/cffi-1.17.1-cp313-cp313-macosx_11_0_arm64.whl -L -o cffi-1.17.1-py3-none-any.whl && \ | ||
| pip install cffi-1.17.1-py3-none-any.whl && \ | ||
| # install the rest of the dependencies | ||
| python -m pip install setuptools wheel |
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Seems like these are also in CIBW_BEFORE_BUILD just below?
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yes, true! It was part of a matrix before, but I've moved it to an iOS only job so we really need CIBW_BEFORE_BUILD or CIBW_BEFORE_BUILD_IOS.
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| - name: Build wheels | ||
| run: python -m cibuildwheel | ||
| env: |
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I think you can set PYMUNK_BUILD_SLIM: 1 here, just like done on wasm/Pypodide. It will exclude the examples from the wheel which if I understand it correctly are not useful anyway, or are they?
| CIBW_BUILD_VERBOSITY: 1 | ||
| CIBW_BEFORE_BUILD_IOS: | | ||
| # download wheel and pretend that it's compatible with the current platform settings | ||
| curl https://files.pythonhosted.org/packages/8b/f1/672d303ddf17c24fc83afd712316fda78dc6fce1cd53011b839483e1ecc8/cffi-1.17.1-cp313-cp313-macosx_11_0_arm64.whl -L -o cffi-1.17.1-py3-none-any.whl && \ |
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So if cffi also build a ios wheel, then this hack would not be needed, right?
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Not quite - BeeWare actually already provides iOS wheels (which are necessary to run Pymunk because there is also a runtime dependency), but this is just for building the wheel. Here, cibuildwheel actually tries to install the iOS wheel, but we want the macOS wheel. The proper solution is for cibuildwheel to install host platform wheels for the build step instead of target platform wheel.
| - name: Build wheels | ||
| run: python -m cibuildwheel | ||
| env: | ||
| IPHONEOS_DEPLOYMENT_TARGET: "23.0" |
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What is this one for, and why 23.0?
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Good point. My other project depend on newer iOS SDK versions but I guess pymunk can down much lower than that. I think the minimum supported version in PEP730 is 12.0.
Experimental builds for iOS using
mainbranch ofcibuildwheel. Tested using Beeware Python 3.13 on a real iOS device. Addresses #276.