REL: Add Arm wheels for linux and windows

.github/workflows/tests.yml

@@ -26,6 +26,11 @@ jobs:
       matrix:
         os: [windows-latest, ubuntu-latest, macos-latest, macos-14]
         python-version: ['3.10', '3.11', '3.12', '3.13', '3.13t']
+        include:
+          - os: ubuntu-24.04-arm
+            python-version: '3.13'
+          - os: ubuntu-24.04-arm
+            python-version: '3.10'
     defaults:
       run:
         shell: bash

.github/workflows/wheels.yml

@@ -13,10 +13,6 @@ on:
       - reopened
       - labeled
 
-concurrency:
-  group: ${{ github.workflow }}-${{ github.event.number }}-${{ github.event_name }}-${{ github.event.ref }}
-  cancel-in-progress: true
-
 jobs:
   build_wheels:
     if: |
@@ -34,7 +30,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-latest, windows-latest, macos-13, macos-14]
+        os: [ubuntu-latest, windows-latest, macos-13, macos-14, ubuntu-24.04-arm]
     defaults:
       run:
         shell: bash
@@ -47,12 +43,6 @@ jobs:
         run: |
           python .github/workflows/download_mirror.py
 
-      - name: Set up QEMU
-        if: runner.os == 'Linux'
-        uses: docker/setup-qemu-action@v3
-        with:
-          platforms: all
-
       # sets up the compiler paths automatically for us
       - uses: fortran-lang/setup-fortran@v1
         id: setup-fortran
@@ -68,19 +58,13 @@ jobs:
           gfortran --version
 
       - name: Build wheels
-        uses: pypa/cibuildwheel@v2.21.3
+        uses: pypa/cibuildwheel@v3.0.0
         env:
           # The brew built gfortran linked libraries have minimum macOS versions
           # of the macOS version they were built on. We would need to compile
           # from source rather than use setup-fortran if we want to support
           # lower macOS versions.
           MACOSX_DEPLOYMENT_TARGET: "${{ matrix.os == 'macos-13' && '13.0' || '14.0' }}"
-          # TEMP don't use automated/isolated build environment, but manually
-          # install build dependencies so we can build with meson from source
-          CIBW_BUILD_FRONTEND: "pip; args: --no-build-isolation"
-          CIBW_BEFORE_BUILD:
-            python -m pip install git+https://github.com/mesonbuild/meson &&
-            python -m pip install ninja meson-python setuptools_scm numpy
 
       - uses: actions/upload-artifact@v4
         with:
@@ -89,15 +73,14 @@ jobs:
 
   build_sdist:
     name: Build source distribution
-    needs: build_wheels
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
 
-      - uses: actions/setup-python@v4
+      - uses: actions/setup-python@v5
         name: Install Python
         with:
-          python-version: '3.12'
+          python-version: '3.13'
 
       - name: Download source files
         run: |
@@ -106,7 +89,7 @@ jobs:
         run: |
           python -m pip install meson-python meson ninja build
           python -m build --sdist
-      - uses: actions/upload-artifact@v3
+      - uses: actions/upload-artifact@v4
         with:
           name: cibw-sdist
           path: dist/*.tar.gz

meson.build

@@ -31,6 +31,9 @@ ff = meson.get_compiler('fortran')
 if ff.has_argument('-Wno-conversion')
   add_project_arguments('-Wno-conversion', language: 'fortran')
 endif
+
+# fast-math optimizations add a pretty significant speed-up.
+# Tests fail on linux aarch64, so don't add the flag there
 if ff.has_argument('-ffast-math')
   add_project_arguments('-ffast-math', language: 'fortran')
 endif

pyproject.toml

@@ -73,10 +73,12 @@ addopts = [
 ]
 
 [tool.cibuildwheel]
+environment.PIP_ONLY_BINARY = "numpy"
+environment.PIP_PREFER_BINARY = "1"
 # skip Python <3.10
 # skip 32 bit windows and linux builds for lack of numpy wheels
-skip = "cp36* cp37* cp38* cp39* *-win32 *_i686"
-free-threaded-support = true
+skip = ["cp38*", "cp39*", "*-win32", "*_i686"]
+enable = ["cpython-freethreading"]
 test-requires = "pytest"
 test-command = "pytest --pyargs pymsis"