iOS broken include/python3.13/patchlevel.h

[timrid]

Description

I tried to build an iOS .whl with cibuildwheel in an Azure Pipeline with the current main branch (7601bfc) . As an easy test I used https://github.com/pybind/scikit_build_example and modified it slightly:

I added an azure-pipelines.yml:

jobs:
  - job: macos
    pool: {vmImage: 'macOS-13'}
    steps:
      - task: UsePythonVersion@0
      - bash: |
          set -o errexit
          python3 -m pip install --upgrade pip
          python3 -m pip install git+https://github.com/pypa/cibuildwheel.git@7601bfcb45be4fcda3c61d8ec571442a0631004f
          python3 -m pip install cmake
          cmake --version
        displayName: Install dependencies
      - bash: cibuildwheel --output-dir wheelhouse .
        displayName: Build wheels
        env:
          CIBW_PLATFORM: "ios"
          CIBW_ARCHS: "auto"
          CIBW_BUILD: "cp313*"
          CIBW_BUILD_VERBOSITY: 3
      - task: PublishBuildArtifacts@1
        inputs: {pathtoPublish: wheelhouse}

And I added this to pyproject.toml:

[tool.cibuildwheel.ios]
test-sources = ["tests"]
test-command = "python -m pytest"
build-frontend = "build"
xbuild-tools = ["cmake", "ninja"]

This gives me an error message during the CMake configuration. It cant find Python any more... When I use cibuildwheel==v3.0.0b5 instead of the current main branch everything works like a charm. So the changes of 7601bfc are breaking something...

Full output:

2025-06-05T06:50:15.4106280Z ##[section]Starting: Build wheels
2025-06-05T06:50:15.4115620Z ==============================================================================
2025-06-05T06:50:15.4115800Z Task         : Bash
2025-06-05T06:50:15.4115880Z Description  : Run a Bash script on macOS, Linux, or Windows
2025-06-05T06:50:15.4116010Z Version      : 3.250.1
2025-06-05T06:50:15.4116100Z Author       : Microsoft Corporation
2025-06-05T06:50:15.4116200Z Help         : https://docs.microsoft.com/azure/devops/pipelines/tasks/utility/bash
2025-06-05T06:50:15.4116350Z ==============================================================================
2025-06-05T06:50:15.6005560Z Generating script.
2025-06-05T06:50:15.6007500Z Script contents:
2025-06-05T06:50:15.6008760Z cibuildwheel --output-dir wheelhouse .
2025-06-05T06:50:15.6009740Z ========================== Starting Command Output ===========================
2025-06-05T06:50:15.6010620Z [command]/bin/bash /Users/runner/work/_temp/4ff1753a-593e-4bd8-8480-0ae5c214036f.sh
2025-06-05T06:50:16.0773620Z 
2025-06-05T06:50:16.0778800Z      _ _       _ _   _       _           _
2025-06-05T06:50:16.0780600Z  ___|_| |_ _ _|_| |_| |_ _ _| |_ ___ ___| |
2025-06-05T06:50:16.0781620Z |  _| | . | | | | | . | | | |   | -_| -_| |
2025-06-05T06:50:16.0795890Z |___|_|___|___|_|_|___|_____|_|_|___|___|_|
2025-06-05T06:50:16.0796750Z 
2025-06-05T06:50:16.0832870Z cibuildwheel version 3.0.0b5
2025-06-05T06:50:16.0833750Z 
2025-06-05T06:50:16.0834650Z Build options:
2025-06-05T06:50:16.0876940Z   platform: ios
2025-06-05T06:50:16.0926680Z   �[38;5;244mallow_empty: False�[0m
2025-06-05T06:50:16.0932420Z   �[38;5;244marchitectures: x86_64_iphonesimulator�[0m
2025-06-05T06:50:16.0933580Z   build_selector: 
2025-06-05T06:50:16.0934640Z     build_config: cp313*
2025-06-05T06:50:16.0935960Z     skip_config: 
2025-06-05T06:50:16.0936980Z     requires_python: >=3.9
2025-06-05T06:50:16.0937980Z     enable: []�[0m
2025-06-05T06:50:16.0939040Z   output_dir: /Users/runner/work/1/s/wheelhouse�[0m
2025-06-05T06:50:16.0940130Z   package_dir: /Users/runner/work/1/s�[0m
2025-06-05T06:50:16.0941260Z   �[38;5;244mtest_selector: 
2025-06-05T06:50:16.0942310Z     skip_config:�[0m
2025-06-05T06:50:16.0943390Z   �[38;5;244mbefore_all: �[0m
2025-06-05T06:50:16.0944510Z   �[38;5;244mbefore_build: �[0m
2025-06-05T06:50:16.0945600Z   �[38;5;244mbefore_test: �[0m
2025-06-05T06:50:16.0946730Z   build_frontend: build�[0m
2025-06-05T06:50:16.0947660Z   build_verbosity: 3�[0m
2025-06-05T06:50:16.0948480Z   �[38;5;244mconfig_settings: �[0m
2025-06-05T06:50:16.0948840Z   �[38;5;244mcontainer_engine: docker�[0m
2025-06-05T06:50:16.0949400Z   �[38;5;244mdependency_constraints: pinned�[0m
2025-06-05T06:50:16.0949690Z   �[38;5;244menvironment: �[0m
2025-06-05T06:50:16.0950010Z   �[38;5;244mmanylinux_images: None�[0m
2025-06-05T06:50:16.0950310Z   �[38;5;244mmusllinux_images: None�[0m
2025-06-05T06:50:16.0951200Z   �[38;5;244mpyodide_version: None�[0m
2025-06-05T06:50:16.0953720Z   �[38;5;244mrepair_command: �[0m
2025-06-05T06:50:16.0955090Z   test_command: python -m pytest�[0m
2025-06-05T06:50:16.0956010Z   �[38;5;244mtest_environment: �[0m
2025-06-05T06:50:16.0957090Z   test_extras: [test]�[0m
2025-06-05T06:50:16.0958210Z   �[38;5;244mtest_groups: �[0m
2025-06-05T06:50:16.0960890Z   �[38;5;244mtest_requires: �[0m
2025-06-05T06:50:16.0961730Z   test_sources: 
2025-06-05T06:50:16.0963340Z     tests�[0m
2025-06-05T06:50:16.0963610Z   xbuild_tools: 
2025-06-05T06:50:16.0963940Z     cmake
2025-06-05T06:50:16.0964130Z     ninja�[0m
2025-06-05T06:50:16.0964240Z 
2025-06-05T06:50:16.0964460Z Cache folder: /Users/runner/Library/Caches/cibuildwheel
2025-06-05T06:50:16.0964590Z 
2025-06-05T06:50:16.0987030Z Here we go!
2025-06-05T06:50:16.0987300Z 
2025-06-05T06:50:16.0996330Z 
2025-06-05T06:50:16.0997290Z �[1m�[34mBuilding cp313-ios_x86_64_iphonesimulator wheel�[0m
2025-06-05T06:50:16.0997740Z CPython 3.13 iOS Simulator (x86_64)
2025-06-05T06:50:16.0998050Z 
2025-06-05T06:50:16.0998730Z ##[group]Installing Build Python cp313...
2025-06-05T06:50:16.0998850Z 
2025-06-05T06:50:16.1001790Z + pkgutil --pkgs
2025-06-05T06:50:16.1341800Z ##[endgroup]
2025-06-05T06:50:16.1342650Z                                                               �[32m✓ �[0m0.03s
2025-06-05T06:50:16.1342990Z ##[group]Installing Target Python cp313...
2025-06-05T06:50:16.1343200Z 
2025-06-05T06:50:16.1347650Z + Download https://github.com/beeware/Python-Apple-support/releases/download/3.13-b8/Python-3.13-iOS-support.b8.tar.gz to /private/var/folders/vk/nx37ffx50hv5djclhltc26vw0000gn/T/cibw-run-sno6n32i/cp313-ios_x86_64_iphonesimulator/build/Python-3.13-iOS-support.b8.tar.gz
2025-06-05T06:50:16.8221890Z + tar -C /Users/runner/Library/Caches/cibuildwheel/Python-3.13-iOS-support.b8 -xf /private/var/folders/vk/nx37ffx50hv5djclhltc26vw0000gn/T/cibw-run-sno6n32i/cp313-ios_x86_64_iphonesimulator/build/Python-3.13-iOS-support.b8.tar.gz
2025-06-05T06:50:19.4483440Z ##[endgroup]
2025-06-05T06:50:19.4487420Z                                                               �[32m✓ �[0m3.31s
2025-06-05T06:50:19.4488590Z ##[group]Creating cross build environment...
2025-06-05T06:50:19.4489570Z 
2025-06-05T06:50:19.4496980Z + Download https://github.com/pypa/get-virtualenv/blob/20.31.2/public/virtualenv.pyz?raw=true to /Users/runner/Library/Caches/cibuildwheel/virtualenv-20.31.2.pyz
2025-06-05T06:50:20.6313710Z + /Library/Frameworks/Python.framework/Versions/3.13/bin/python3 -sS /Users/runner/Library/Caches/cibuildwheel/virtualenv-20.31.2.pyz --activators= --no-periodic-update --pip=25.1.1 --no-setuptools --symlink-app-data --python /Library/Frameworks/Python.framework/Versions/3.13/bin/python3.13 /private/var/folders/vk/nx37ffx50hv5djclhltc26vw0000gn/T/cibw-run-sno6n32i/cp313-ios_x86_64_iphonesimulator/build/venv
2025-06-05T06:50:22.7542870Z created virtual environment CPython3.13.3.final.0-64 in 1831ms
2025-06-05T06:50:22.8194570Z   creator CPython3Posix(dest=/private/var/folders/vk/nx37ffx50hv5djclhltc26vw0000gn/T/cibw-run-sno6n32i/cp313-ios_x86_64_iphonesimulator/build/venv, clear=False, no_vcs_ignore=False, global=False)
2025-06-05T06:50:22.8297140Z   seeder FromAppData(download=False, pip=25.1.1, via=symlink, app_data_dir=/Users/runner/Library/Application Support/virtualenv)
2025-06-05T06:50:22.8410940Z     added seed packages: pip==25.1.1
2025-06-05T06:50:22.8422410Z + python /Users/runner/Library/Caches/cibuildwheel/Python-3.13-iOS-support.b8/Python.xcframework/ios-arm64_x86_64-simulator/platform-config/x86_64-iphonesimulator/make_cross_venv.py /private/var/folders/vk/nx37ffx50hv5djclhltc26vw0000gn/T/cibw-run-sno6n32i/cp313-ios_x86_64_iphonesimulator/build/venv
2025-06-05T06:50:22.8478220Z Converting /private/var/folders/vk/nx37ffx50hv5djclhltc26vw0000gn/T/cibw-run-sno6n32i/cp313-ios_x86_64_iphonesimulator/build/venv into a x86_64-iphonesimulator environment... done.
2025-06-05T06:50:22.8480210Z 'cmake' will be included in the cross-build environment (using /Library/Frameworks/Python.framework/Versions/3.13/bin/cmake)
2025-06-05T06:50:22.8481660Z 'ninja' will be included in the cross-build environment (using /usr/local/Cellar/ninja/1.12.1/bin/ninja)
2025-06-05T06:50:22.8483220Z + python -m pip install --upgrade pip -c file:///Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/site-packages/cibuildwheel/resources/constraints-python313.txt
2025-06-05T06:50:23.2990040Z Requirement already satisfied: pip in ./lib/python3.13/site-packages (25.1.1)
2025-06-05T06:50:23.4961830Z + which python
2025-06-05T06:50:23.5041440Z /private/var/folders/vk/nx37ffx50hv5djclhltc26vw0000gn/T/cibw-run-sno6n32i/cp313-ios_x86_64_iphonesimulator/build/venv/bin/python
2025-06-05T06:50:23.5042000Z + python --version
2025-06-05T06:50:23.5165220Z Python 3.13.3
2025-06-05T06:50:23.5171680Z + which pip
2025-06-05T06:50:23.5213670Z /private/var/folders/vk/nx37ffx50hv5djclhltc26vw0000gn/T/cibw-run-sno6n32i/cp313-ios_x86_64_iphonesimulator/build/venv/bin/pip
2025-06-05T06:50:23.5215010Z + pip --version
2025-06-05T06:50:23.7711440Z pip 25.1.1 from /private/var/folders/vk/nx37ffx50hv5djclhltc26vw0000gn/T/cibw-run-sno6n32i/cp313-ios_x86_64_iphonesimulator/build/venv/lib/python3.13/site-packages/pip (python 3.13)
2025-06-05T06:50:23.7990070Z ##[endgroup]
2025-06-05T06:50:23.7991870Z                                                               �[32m✓ �[0m4.35s
2025-06-05T06:50:23.7993020Z ##[group]Installing build tools...
2025-06-05T06:50:23.7993810Z 
2025-06-05T06:50:23.7995120Z + pip install --upgrade 'build[virtualenv]' -c file:///Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/site-packages/cibuildwheel/resources/constraints-python313.txt
2025-06-05T06:50:24.5833360Z Collecting build[virtualenv]
2025-06-05T06:50:24.6768930Z   Downloading build-1.2.2.post1-py3-none-any.whl.metadata (6.5 kB)
2025-06-05T06:50:24.6819850Z Collecting packaging>=19.1 (from build[virtualenv])
2025-06-05T06:50:24.6859190Z   Downloading packaging-25.0-py3-none-any.whl.metadata (3.3 kB)
2025-06-05T06:50:24.7046740Z Collecting pyproject_hooks (from build[virtualenv])
2025-06-05T06:50:24.7206940Z   Downloading pyproject_hooks-1.2.0-py3-none-any.whl.metadata (1.3 kB)
2025-06-05T06:50:24.8812500Z Collecting virtualenv>=20.0.35 (from build[virtualenv])
2025-06-05T06:50:24.9023390Z   Downloading virtualenv-20.31.2-py3-none-any.whl.metadata (4.5 kB)
2025-06-05T06:50:24.9061960Z Collecting distlib<1,>=0.3.7 (from virtualenv>=20.0.35->build[virtualenv])
2025-06-05T06:50:24.9145570Z   Downloading distlib-0.3.9-py2.py3-none-any.whl.metadata (5.2 kB)
2025-06-05T06:50:24.9533900Z Collecting filelock<4,>=3.12.2 (from virtualenv>=20.0.35->build[virtualenv])
2025-06-05T06:50:24.9575260Z   Downloading filelock-3.18.0-py3-none-any.whl.metadata (2.9 kB)
2025-06-05T06:50:24.9882210Z Collecting platformdirs<5,>=3.9.1 (from virtualenv>=20.0.35->build[virtualenv])
2025-06-05T06:50:24.9925770Z   Downloading platformdirs-4.3.8-py3-none-any.whl.metadata (12 kB)
2025-06-05T06:50:25.0090100Z Downloading build-1.2.2.post1-py3-none-any.whl (22 kB)
2025-06-05T06:50:25.0204440Z Downloading packaging-25.0-py3-none-any.whl (66 kB)
2025-06-05T06:50:25.0331530Z Downloading virtualenv-20.31.2-py3-none-any.whl (6.1 MB)
2025-06-05T06:50:25.0866970Z    ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 6.1/6.1 MB 120.3 MB/s eta 0:00:00
2025-06-05T06:50:25.0917520Z Downloading distlib-0.3.9-py2.py3-none-any.whl (468 kB)
2025-06-05T06:50:25.1147430Z Downloading filelock-3.18.0-py3-none-any.whl (16 kB)
2025-06-05T06:50:25.1259410Z Downloading platformdirs-4.3.8-py3-none-any.whl (18 kB)
2025-06-05T06:50:25.1354650Z Downloading pyproject_hooks-1.2.0-py3-none-any.whl (10 kB)
2025-06-05T06:50:25.1764160Z Installing collected packages: distlib, pyproject_hooks, platformdirs, packaging, filelock, virtualenv, build
2025-06-05T06:50:25.5715060Z 
2025-06-05T06:50:25.5736520Z Successfully installed build-1.2.2.post1 distlib-0.3.9 filelock-3.18.0 packaging-25.0 platformdirs-4.3.8 pyproject_hooks-1.2.0 virtualenv-20.31.2
2025-06-05T06:50:25.6619290Z + python -m pip freeze --all
2025-06-05T06:50:26.0631370Z ##[endgroup]
2025-06-05T06:50:26.0814210Z                                                               �[32m✓ �[0m2.18s
2025-06-05T06:50:26.0826710Z ##[group]Building wheel...
2025-06-05T06:50:26.0827830Z 
2025-06-05T06:50:26.0829110Z + python -m build /Users/runner/work/1/s --wheel --outdir=/private/var/folders/vk/nx37ffx50hv5djclhltc26vw0000gn/T/cibw-run-sno6n32i/cp313-ios_x86_64_iphonesimulator/built_wheel -vv
2025-06-05T06:50:26.1136820Z * Creating isolated environment: venv+pip...
2025-06-05T06:50:26.1172300Z * Installing packages in isolated environment:
2025-06-05T06:50:26.1174060Z   - pybind11
2025-06-05T06:50:26.1175750Z   - scikit-build-core>=0.10
2025-06-05T06:50:26.1177480Z > /private/var/folders/vk/nx37ffx50hv5djclhltc26vw0000gn/T/cibw-run-
2025-06-05T06:50:26.1179370Z   sno6n32i/cp313-ios_x86_64_iphonesimulator/build/venv/bin/python -m pip
2025-06-05T06:50:26.1181700Z   --python /private/var/folders/vk/nx37ffx50hv5djclhltc26vw0000gn/T/build-
2025-06-05T06:50:26.1183490Z   env-522txbpk/bin/python -v install --use-pep517 --no-warn-script-location
2025-06-05T06:50:26.1185220Z   --no-compile -r /var/folders/vk/nx37ffx50hv5djclhltc26vw0000gn/T/build-
2025-06-05T06:50:26.1187250Z   reqs-0w3m0mpv.txt
2025-06-05T06:50:26.6656930Z �[2m< Using pip 25.1.1 from /Users/runner/Library/Application
2025-06-05T06:50:26.6658140Z   Support/virtualenv/wheel/3.13/image/1/SymlinkPipInstall/pip-25.1.1-py3-none-
2025-06-05T06:50:26.6659190Z   any/pip (python 3.13)�[0m
2025-06-05T06:50:26.8280660Z �[2m< Collecting scikit-build-core>=0.10 (from -r
2025-06-05T06:50:26.8281090Z   /var/folders/vk/nx37ffx50hv5djclhltc26vw0000gn/T/build-reqs-0w3m0mpv.txt
2025-06-05T06:50:26.8281380Z   (line 1))�[0m
2025-06-05T06:50:26.8282310Z �[2m<   Obtaining dependency information for scikit-build-core>=0.10 from https://
2025-06-05T06:50:26.8282790Z   files.pythonhosted.org/packages/7d/24/994c9e68be81508270b00e32e797add99b445c
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2025-06-05T06:50:26.8783950Z �[2m<   Downloading scikit_build_core-0.11.4-py3-none-any.whl.metadata (18 kB)�[0m
2025-06-05T06:50:26.9318760Z �[2m< Collecting pybind11 (from -r
2025-06-05T06:50:26.9319170Z   /var/folders/vk/nx37ffx50hv5djclhltc26vw0000gn/T/build-reqs-0w3m0mpv.txt
2025-06-05T06:50:26.9320020Z   (line 2))�[0m
2025-06-05T06:50:26.9320450Z �[2m<   Obtaining dependency information for pybind11 from https://files.pythonhos
2025-06-05T06:50:26.9320830Z   ted.org/packages/13/2f/0f24b288e2ce56f51c920137620b4434a38fd80583dbbe24fc2a1
2025-06-05T06:50:26.9321170Z   656c388/pybind11-2.13.6-py3-none-any.whl.metadata�[0m
2025-06-05T06:50:26.9368560Z �[2m<   Downloading pybind11-2.13.6-py3-none-any.whl.metadata (9.5 kB)�[0m
2025-06-05T06:50:26.9621120Z �[2m< Collecting packaging>=23.2 (from scikit-build-core>=0.10->-r
2025-06-05T06:50:26.9622160Z   /var/folders/vk/nx37ffx50hv5djclhltc26vw0000gn/T/build-reqs-0w3m0mpv.txt
2025-06-05T06:50:26.9623030Z   (line 1))�[0m
2025-06-05T06:50:26.9623560Z �[2m<   Obtaining dependency information for packaging>=23.2 from https://files.py
2025-06-05T06:50:26.9625460Z   thonhosted.org/packages/20/12/38679034af332785aac8774540895e234f4d07f7545804
2025-06-05T06:50:26.9627390Z   097de4b666afd8/packaging-25.0-py3-none-any.whl.metadata�[0m
2025-06-05T06:50:26.9644450Z �[2m<   Using cached packaging-25.0-py3-none-any.whl.metadata (3.3 kB)�[0m
2025-06-05T06:50:26.9819630Z �[2m< Collecting pathspec>=0.10.1 (from scikit-build-core>=0.10->-r
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2025-06-05T06:50:26.9823340Z �[2m<   Obtaining dependency information for pathspec>=0.10.1 from https://files.p
2025-06-05T06:50:26.9824430Z   ythonhosted.org/packages/cc/20/ff623b09d963f88bfde16306a54e12ee5ea43e9b59710
2025-06-05T06:50:26.9825500Z   8672ff3a408aad6/pathspec-0.12.1-py3-none-any.whl.metadata�[0m
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2025-06-05T06:50:27.0062330Z �[2m< Downloading scikit_build_core-0.11.4-py3-none-any.whl (185 kB)�[0m
2025-06-05T06:50:27.0270310Z �[2m< Downloading pybind11-2.13.6-py3-none-any.whl (243 kB)�[0m
2025-06-05T06:50:27.0360790Z �[2m< Using cached packaging-25.0-py3-none-any.whl (66 kB)�[0m
2025-06-05T06:50:27.0409870Z �[2m< Downloading pathspec-0.12.1-py3-none-any.whl (31 kB)�[0m
2025-06-05T06:50:27.0730750Z �[2m< Installing collected packages: pybind11, pathspec, packaging, scikit-build-
2025-06-05T06:50:27.0731740Z   core�[0m
2025-06-05T06:50:27.1030100Z �[2m<   changing mode of
2025-06-05T06:50:27.1034180Z   /private/var/folders/vk/nx37ffx50hv5djclhltc26vw0000gn/T/build-
2025-06-05T06:50:27.1036130Z   env-522txbpk/bin/pybind11-config to 755�[0m
2025-06-05T06:50:27.1746980Z �[2m�[0m
2025-06-05T06:50:27.1819130Z �[2m< Successfully installed packaging-25.0 pathspec-0.12.1 pybind11-2.13.6
2025-06-05T06:50:27.1822140Z   scikit-build-core-0.11.4�[0m
2025-06-05T06:50:27.2803520Z * Getting build dependencies for wheel...
2025-06-05T06:50:27.8493890Z * Building wheel...
2025-06-05T06:50:28.3138460Z *** scikit-build-core 0.11.4 using CMake 4.0.2 (wheel)
2025-06-05T06:50:28.3190440Z *** Configuring CMake...
2025-06-05T06:50:28.7850030Z loading initial cache file /var/folders/vk/nx37ffx50hv5djclhltc26vw0000gn/T/tmpilmlfj3x/build/CMakeInit.txt
2025-06-05T06:50:34.8732140Z -- The CXX compiler identification is AppleClang 15.0.0.15000100
2025-06-05T06:50:35.7517690Z -- Detecting CXX compiler ABI info
2025-06-05T06:50:35.9883230Z -- Detecting CXX compiler ABI info - done
2025-06-05T06:50:36.0120820Z -- Check for working CXX compiler: /Users/runner/Library/Caches/cibuildwheel/Python-3.13-iOS-support.b8/Python.xcframework/ios-arm64_x86_64-simulator/bin/x86_64-apple-ios-simulator-clang++ - skipped
2025-06-05T06:50:36.0122740Z -- Detecting CXX compile features
2025-06-05T06:50:36.0132650Z -- Detecting CXX compile features - done
2025-06-05T06:50:36.3379740Z CMake Error at /Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/site-packages/cmake/data/share/cmake-4.0/Modules/FindPython/Support.cmake:752 (file):
2025-06-05T06:50:36.3380390Z   file STRINGS file
2025-06-05T06:50:36.3380770Z   "/private/var/folders/vk/nx37ffx50hv5djclhltc26vw0000gn/T/build-env-522txbpk/include/python3.13/patchlevel.h"
2025-06-05T06:50:36.3381100Z   cannot be read.
2025-06-05T06:50:36.3381330Z Call Stack (most recent call first):
2025-06-05T06:50:36.3381760Z   /Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/site-packages/cmake/data/share/cmake-4.0/Modules/FindPython/Support.cmake:3747 (_python_get_version)
2025-06-05T06:50:36.3382300Z   /Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/site-packages/cmake/data/share/cmake-4.0/Modules/FindPython.cmake:691 (include)
2025-06-05T06:50:36.3382690Z   CMakeLists.txt:14 (find_package)
2025-06-05T06:50:36.3382870Z 
2025-06-05T06:50:36.3382930Z 
2025-06-05T06:50:36.3383310Z CMake Error at /Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/site-packages/cmake/data/share/cmake-4.0/Modules/FindPython/Support.cmake:757 (list):
2025-06-05T06:50:36.3383710Z   list GET given empty list
2025-06-05T06:50:36.3383930Z Call Stack (most recent call first):
2025-06-05T06:50:36.3384360Z   /Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/site-packages/cmake/data/share/cmake-4.0/Modules/FindPython/Support.cmake:3747 (_python_get_version)
2025-06-05T06:50:36.3384910Z   /Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/site-packages/cmake/data/share/cmake-4.0/Modules/FindPython.cmake:691 (include)
2025-06-05T06:50:36.3385310Z   CMakeLists.txt:14 (find_package)
2025-06-05T06:50:36.3385410Z 
2025-06-05T06:50:36.3385510Z 
2025-06-05T06:50:36.3385890Z CMake Error at /Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/site-packages/cmake/data/share/cmake-4.0/Modules/FindPython/Support.cmake:758 (list):
2025-06-05T06:50:36.3386260Z   list GET given empty list
2025-06-05T06:50:36.3386510Z Call Stack (most recent call first):
2025-06-05T06:50:36.3386940Z   /Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/site-packages/cmake/data/share/cmake-4.0/Modules/FindPython/Support.cmake:3747 (_python_get_version)
2025-06-05T06:50:36.3387500Z   /Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/site-packages/cmake/data/share/cmake-4.0/Modules/FindPython.cmake:691 (include)
2025-06-05T06:50:36.3387890Z   CMakeLists.txt:14 (find_package)
2025-06-05T06:50:36.3388000Z 
2025-06-05T06:50:36.3388090Z 
2025-06-05T06:50:36.3388440Z CMake Error at /Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/site-packages/cmake/data/share/cmake-4.0/Modules/FindPython/Support.cmake:759 (list):
2025-06-05T06:50:36.3388840Z   list GET given empty list
2025-06-05T06:50:36.3389100Z Call Stack (most recent call first):
2025-06-05T06:50:36.3389940Z   /Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/site-packages/cmake/data/share/cmake-4.0/Modules/FindPython/Support.cmake:3747 (_python_get_version)
2025-06-05T06:50:36.3390500Z   /Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/site-packages/cmake/data/share/cmake-4.0/Modules/FindPython.cmake:691 (include)
2025-06-05T06:50:36.3391110Z   CMakeLists.txt:14 (find_package)
2025-06-05T06:50:36.3391220Z 
2025-06-05T06:50:36.3391280Z 
2025-06-05T06:50:36.4034850Z CMake Error at /Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/site-packages/cmake/data/share/cmake-4.0/Modules/FindPython/Support.cmake:752 (file):
2025-06-05T06:50:36.4035380Z   file STRINGS file
2025-06-05T06:50:36.4035910Z   "/private/var/folders/vk/nx37ffx50hv5djclhltc26vw0000gn/T/build-env-522txbpk/include/python3.13/patchlevel.h"
2025-06-05T06:50:36.4036430Z   cannot be read.
2025-06-05T06:50:36.4036850Z Call Stack (most recent call first):
2025-06-05T06:50:36.4037590Z   /Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/site-packages/cmake/data/share/cmake-4.0/Modules/FindPython/Support.cmake:3747 (_python_get_version)
2025-06-05T06:50:36.4038200Z   /Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/site-packages/cmake/data/share/cmake-4.0/Modules/FindPython.cmake:691 (include)
2025-06-05T06:50:36.4038610Z   CMakeLists.txt:14 (find_package)
2025-06-05T06:50:36.4038720Z 
2025-06-05T06:50:36.4038800Z 
2025-06-05T06:50:36.4039160Z CMake Error at /Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/site-packages/cmake/data/share/cmake-4.0/Modules/FindPython/Support.cmake:757 (list):
2025-06-05T06:50:36.4039560Z   list GET given empty list
2025-06-05T06:50:36.4039820Z Call Stack (most recent call first):
2025-06-05T06:50:36.4040240Z   /Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/site-packages/cmake/data/share/cmake-4.0/Modules/FindPython/Support.cmake:3747 (_python_get_version)
2025-06-05T06:50:36.4040800Z   /Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/site-packages/cmake/data/share/cmake-4.0/Modules/FindPython.cmake:691 (include)
2025-06-05T06:50:36.4041200Z   CMakeLists.txt:14 (find_package)
2025-06-05T06:50:36.4041300Z 
2025-06-05T06:50:36.4041370Z 
2025-06-05T06:50:36.4041750Z CMake Error at /Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/site-packages/cmake/data/share/cmake-4.0/Modules/FindPython/Support.cmake:758 (list):
2025-06-05T06:50:36.4042150Z   list GET given empty list
2025-06-05T06:50:36.4042390Z Call Stack (most recent call first):
2025-06-05T06:50:36.4042820Z   /Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/site-packages/cmake/data/share/cmake-4.0/Modules/FindPython/Support.cmake:3747 (_python_get_version)
2025-06-05T06:50:36.4043390Z   /Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/site-packages/cmake/data/share/cmake-4.0/Modules/FindPython.cmake:691 (include)
2025-06-05T06:50:36.4043760Z   CMakeLists.txt:14 (find_package)
2025-06-05T06:50:36.4043900Z 
2025-06-05T06:50:36.4043960Z 
2025-06-05T06:50:36.4044340Z CMake Error at /Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/site-packages/cmake/data/share/cmake-4.0/Modules/FindPython/Support.cmake:759 (list):
2025-06-05T06:50:36.4044740Z   list GET given empty list
2025-06-05T06:50:36.4044980Z Call Stack (most recent call first):
2025-06-05T06:50:36.4045380Z   /Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/site-packages/cmake/data/share/cmake-4.0/Modules/FindPython/Support.cmake:3747 (_python_get_version)
2025-06-05T06:50:36.4045940Z   /Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/site-packages/cmake/data/share/cmake-4.0/Modules/FindPython.cmake:691 (include)
2025-06-05T06:50:36.4046390Z   CMakeLists.txt:14 (find_package)
2025-06-05T06:50:36.4046500Z 
2025-06-05T06:50:36.4046560Z 
2025-06-05T06:50:36.5029080Z CMake Error at /Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/site-packages/cmake/data/share/cmake-4.0/Modules/FindPackageHandleStandardArgs.cmake:227 (message):
2025-06-05T06:50:36.5030020Z   Could NOT find Python (missing: Interpreter Development.Module) (found
2025-06-05T06:50:36.5030310Z   version "..")
2025-06-05T06:50:36.5030540Z Call Stack (most recent call first):
2025-06-05T06:50:36.5030970Z   /Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/site-packages/cmake/data/share/cmake-4.0/Modules/FindPackageHandleStandardArgs.cmake:591 (_FPHSA_FAILURE_MESSAGE)
2025-06-05T06:50:36.5031820Z   /Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/site-packages/cmake/data/share/cmake-4.0/Modules/FindPython.cmake:712 (find_package_handle_standard_args)
2025-06-05T06:50:36.5032250Z   CMakeLists.txt:14 (find_package)
2025-06-05T06:50:36.5032380Z 
2025-06-05T06:50:36.5032440Z 
2025-06-05T06:50:36.5119000Z -- Configuring incomplete, errors occurred!
2025-06-05T06:50:36.5119150Z 
2025-06-05T06:50:36.5119410Z *** CMake configuration failed
2025-06-05T06:50:36.5566190Z 
2025-06-05T06:50:36.5566850Z ERROR Backend subprocess exited when trying to invoke build_wheel
2025-06-05T06:50:36.6090410Z ##[endgroup]
2025-06-05T06:50:36.6091280Z                                                              �[31m✕ �[0m10.63s
2025-06-05T06:50:36.6092240Z cibuildwheel: �[91merror�[0m: Command ['/private/var/folders/vk/nx37ffx50hv5djclhltc26vw0000gn/T/cibw-run-sno6n32i/cp313-ios_x86_64_iphonesimulator/build/venv/bin/python', '-m', 'build', '/Users/runner/work/1/s', '--wheel', '--outdir=/private/var/folders/vk/nx37ffx50hv5djclhltc26vw0000gn/T/cibw-run-sno6n32i/cp313-ios_x86_64_iphonesimulator/built_wheel', '-vv'] failed with code 1. 
2025-06-05T06:50:36.6092790Z 
2025-06-05T06:50:36.6397050Z 
2025-06-05T06:50:36.6428050Z ##[error]Bash exited with code '1'.
2025-06-05T06:50:36.6451990Z ##[section]Finishing: Build wheels

Build log

No response

CI config

No response

[henryiii]

CC @freakboy3742

Trying this in pybind/pybind11#5717

Yes, new version is broken:

  CMake Error at /opt/homebrew/Cellar/cmake/4.0.2/share/cmake/Modules/FindPython/Support.cmake:752 (file):
    file STRINGS file
    "/private/var/folders/tp/bfmjfn9s0hd59bm9z80j3mgm0000gn/T/build-env-476vpoan/include/python3.13/patchlevel.h"
    cannot be read.

[henryiii]

@freakboy3742 Should we revert the iOS support package so we can make a 3.0.0 final release?

[freakboy3742]

@henryiii Reverting will introduce a bunch of other problems; b7 won't start on CI; b6 doesn't have any of the IPHONEOS_DEPLOY_TARGET handling.

I'm not sure I understand what about the file can't be read, though... I'm not making any changes to that include file; and the only delta I can see between b6 and b8 of the package is a bump of PY_MICRO_VERSION from 2 to 4...

[freakboy3742]

I've just tested, and a very similar problem occurs on b6 - although on the simulator build, rather than the device build... and b7 fails the same way as b8. Reverting won't help here.

[henryiii]

We had everything working, simulator and device, on b6, that's what I was suggesting reverting to, to unblock the release. Pybind11 3.0.0rc3 reworked the C++ thread_local part for the CPython implementation so we would not need to set the iPhone target. You can see it working with the previous cibw beta.

(everything except the x86 target, I didn't build for that)

[freakboy3742]

Hrm... I just tested on b6 and repeated the error - the device build succeeds, but the simulator fails with the same cmake "could not find Python" error.

[freakboy3742]

Ok - I think I have found the problem... I was seeing the failure because I was manually tweaking my cached copy of b6.

The fact that b6 succeeds is mostly accidental - it's pulling in the macOS header files. The changes in b7/8 fix the sysconfig.get_path("include") so it no longer points at the macOS build... but it points at a no-op location. That isn't a problem for numpy for some reason, but clearly pybind11 cares.

I think I know how to fix this; let me see what I can do.

[freakboy3742]

Found the problem: beeware/Python-Apple-support#297

I'll roll new releases; should take around an hour for everything to finish.

Out of interest - is there any way to point cibuildwheel at a specific support package version(s) without doing the full "bump versions" process? I'd like to add a cibuildwheel check to CI for the support package, but it's not obvious to me how I'd set that up.

[henryiii]

is there any way to point cibuildwheel at a specific support

I believe this is basically what pyodide-version does (but just for pyodide). Maybe we should try to generalize this idea.

I've wanted to allow advanced users to define overrides for the support table, but maybe that's too much of our internals exposed.

@joerick should we add a warning to pyodide-version while we work on a potentially more general version, so we can remove it if we come up with a more general config in 3.1? It's new in 3.0. This is what I'm thinking:

"This option is considered experimental, and might be converted to a more general mechanism in a future minor cibuildwheel release."

[freakboy3742]

FYI - 3.13-b9 is now published, and seems to work in my testing.

[henryiii]

#2449

[henryiii]

v3.0.0rc2 out, I'll test, would be nice to get confirmation from @timrid too. :)

[henryiii]

Works:

• ci: add 3.14, iOS pybind/scikit_build_example#166
• https://github.com/pybind/pybind11/actions/runs/15482651405/job/43591192936?pr=5717
• ci: add iOS wheels scikit-hep/boost-histogram#1020