ci: use macos-14 runners (#3985)

* ci: use macos-14 runners

* use arm64 python architecture

.github/workflows/ci.yml

@@ -74,9 +74,9 @@ jobs:
  rust: [stable]
  platform: [
  {
- os: "macos-latest",
- python-architecture: "x64",
- rust-target: "x86_64-apple-darwin",
+ os: "macos-14", # first available arm macos runner
+ python-architecture: "arm64",
+ rust-target: "aarch64-apple-darwin",
  },
  {
  os: "ubuntu-latest",
@@ -119,7 +119,7 @@ jobs:
  rust-target: "x86_64-unknown-linux-gnu",
  }
  name: clippy/${{ matrix.platform.rust-target }}/${{ matrix.rust }}
- continue-on-error: ${{ matrix.platform.rust != 'stable' }}
+ continue-on-error: ${{ matrix.rust != 'stable' }}
  steps:
  - uses: actions/checkout@v4
  - uses: dtolnay/rust-toolchain@master
@@ -161,7 +161,12 @@ jobs:
  platform:
  [
  {
- os: "macos-latest",
+ os: "macos-14", # first available arm macos runner
+ python-architecture: "arm64",
+ rust-target: "aarch64-apple-darwin",
+ },
+ {
+ os: "macos-13", # last available x86_64 macos runner
  python-architecture: "x64",
  rust-target: "x86_64-apple-darwin",
  },
@@ -226,8 +231,13 @@ jobs:
  ]
  platform:
  [
+ # for the full matrix, use x86_64 macos runners because not all Python versions
+ # PyO3 supports are available for arm on GitHub Actions. (Availability starts
+ # around Python 3.10, can switch the full matrix to arm once earlier versions
+ # are dropped.)
+ # NB: if this switches to arm, switch the arm job below in the `include` to x86_64
  {
- os: "macos-latest",
+ os: "macos-13",
  python-architecture: "x64",
  rust-target: "x86_64-apple-darwin",
  },
@@ -287,6 +297,18 @@ jobs:
  }
  extra-features: "multiple-pymethods"
 
+ # test arm macos runner with the latest Python version
+ # NB: if the full matrix switchess to arm, switch to x86_64 here
+ - rust: stable
+ python-version: "3.12"
+ platform:
+ {
+ os: "macos-14",
+ python-architecture: "arm64",
+ rust-target: "aarch64-apple-darwin",
+ }
+ extra-features: "multiple-pymethods"
+
  valgrind:
  if: ${{ contains(github.event.pull_request.labels.*.name, 'CI-build-full') || github.event_name != 'pull_request' }}
  needs: [fmt]
@@ -343,13 +365,13 @@ jobs:
 
  coverage:
  needs: [fmt]
- name: coverage-${{ matrix.os }}
+ name: coverage ${{ matrix.os }}
  strategy:
  matrix:
- os: ["windows", "macos", "ubuntu"]
- runs-on: ${{ matrix.os }}-latest
+ os: ["windows-latest", "macos-14", "ubuntu-latest"] # first available arm macos runner
+ runs-on: ${{ matrix.os }}
  steps:
- - if: ${{ github.event_name == 'pull_request' && matrix.os != 'ubuntu' }}
+ - if: ${{ github.event_name == 'pull_request' && matrix.os != 'ubuntu-latest' }}
  id: should-skip
  shell: bash
  run: echo 'skip=true' >> $GITHUB_OUTPUT