build-matrix.json

{
  "comment0": "The minimum supported version of Python is currently 3.9.",
  "pythonVersions": [
    "3.9",
    "3.12",
    "3.13"
  ],

  "comment1": "runners hosted by GitHub, always enabled",
  "hosted": [
    {
      "os": "ubuntu-24.04",
      "os_name": "linux",
      "target_arch": "x64"
    },
    {
      "comment": "Explicit macOS version 13 is required for explicit x64 CPU.",
      "os": "macos-13",
      "os_name": "osx",
      "target_arch": "x64"
    },
    {
      "comment": "Latest macOS version is arm64 CPU.",
      "os": "macos-latest",
      "os_name": "osx",
      "target_arch": "arm64"
    },
    {
      "os": "windows-latest",
      "os_name": "win",
      "target_arch": "x64"
    }
  ],

  "comment2": "runners hosted by the owner, enabled by the ENABLE_SELF_HOSTED variable being set on the repo",
  "selfHosted": [
    {
      "os": "self-hosted-linux-arm64",
      "os_name": "linux",
      "target_arch": "arm64"
    }
  ]
}