ci: add iOS wheels (#1020)

* ci: add iOS wheels

Signed-off-by: Henry Schreiner <henryschreineriii@gmail.com>

* style: pre-commit fixes

* Update pyproject.toml

* Update pyproject.toml

---------

Signed-off-by: Henry Schreiner <henryschreineriii@gmail.com>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

Author: henryiii

.github/workflows/wheels.yml

@@ -100,7 +100,7 @@ jobs:
 
       - uses: astral-sh/setup-uv@v6
 
-      - uses: mhsmith/cibuildwheel@android
+      - uses: pypa/cibuildwheel@v3.0.0rc2
         env:
           CIBW_BUILD: ${{ matrix.build }}
           CIBW_ARCHS: ${{ matrix.arch }}
@@ -115,9 +115,39 @@ jobs:
           path: wheelhouse/*.whl
           name: wheels-${{ strategy.job-index }}
 
+  build_ios_wheels:
+    name: iOS ${{ matrix.runs-on }}
+    runs-on: ${{ matrix.runs-on }}
+    strategy:
+      fail-fast: false
+      matrix:
+        runs-on: [macos-latest, macos-13]
+
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+          submodules: true
+
+      - run: brew upgrade cmake
+
+      - uses: pypa/cibuildwheel@v3.0.0rc2
+        env:
+          CIBW_PLATFORM: ios
+
+      - name: Verify clean directory
+        run: git diff --exit-code
+        shell: bash
+
+      - name: Upload wheels
+        uses: actions/upload-artifact@v4
+        with:
+          path: wheelhouse/*.whl
+          name: wheels-ios-${{ matrix.runs-on }}
+
   upload_all:
     name: Upload if release
-    needs: [build_wheels, build_sdist]
+    needs: [build_wheels, build_ios_wheels, build_sdist]
     runs-on: ubuntu-latest
     if: github.event_name == 'release' && github.event.action == 'published'
     environment:

.pre-commit-config.yaml

@@ -82,8 +82,8 @@ repos:
     hooks:
       - id: check-readthedocs
       - id: check-github-workflows
-
-  - repo: https://github.com/henryiii/validate-pyproject-schema-store
-    rev: 2025.05.12
-    hooks:
-      - id: validate-pyproject
+# TMP: waiting for cibuildwheel 3.0
+#  - repo: https://github.com/henryiii/validate-pyproject-schema-store
+#    rev: 2025.05.12
+#    hooks:
+#      - id: validate-pyproject

pyproject.toml

@@ -1,5 +1,5 @@
 [build-system]
-requires = ["scikit-build-core>=0.11", "pybind11==3.0.0rc2"]
+requires = ["scikit-build-core>=0.11", "pybind11==3.0.0rc3"]
 build-backend = "scikit_build_core.build"
 
 [project]
@@ -88,14 +88,17 @@ examples = [
     "xarray",
     "xhistogram",
 ]
-test = [
+test-core = [
     "cloudpickle",
-    "hypothesis>=6.0",
     "pytest-benchmark",
     "pytest>=6.0",
-    "pytest-xdist",
     "numpy",
 ]
+test = [
+    { include-group = "test-core" },
+    "hypothesis>=6.0; sys_platform != 'ios'", # slow on iOS, can fail health check
+    "pytest-xdist; sys_platform != 'ios'",  # No processes on iOS
+]
 github = [
   { include-group = "test" },
   "setuptools_scm",
@@ -175,7 +178,8 @@ ignore_missing_imports = true
 [tool.cibuildwheel]
 build-frontend = "build[uv]"
 test-groups = ["test"]
-test-command = "python -m pytest -n auto --benchmark-disable {project}/tests"
+test-command = "python -m pytest -n auto --benchmark-disable tests"
+test-sources = ["pyproject.toml", "tests"]
 test-skip = [
   "cp3{9,10}-win_arm64",
   "cp3{9,10}-musllinux_*",
@@ -192,7 +196,14 @@ environment.UV_PREFER_BINARY = "1"
 
 [tool.cibuildwheel.pyodide]
 build-frontend = {name = "build", args = ["--exports", "whole_archive"]}
-test-command = "pytest --benchmark-disable {project}/tests"
+test-command = "pytest --benchmark-disable tests"
+test-groups = ["test-core"]  # Working around a bug with markers in pyodide
+
+[tool.cibuildwheel.ios]
+build-frontend = "build"
+xbuild-tools = ["cmake", "ninja"]
+test-command = "pytest --benchmark-disable tests"
+environment.PIP_EXTRA_INDEX_URL = "https://pypi.anaconda.org/beeware/simple/"
 
 [[tool.cibuildwheel.overrides]]
 select = "pp310-macosx_arm64"