bazel/platforms/BUILD.bazel

platform(
    name = "x64_windows-clang-cl",
    constraint_values = [
        "@platforms//cpu:x86_64",
        "@platforms//os:windows",
        "@bazel_tools//tools/cpp:clang-cl",
    ],
)

platform(
    name = "macos_x86_64",
    constraint_values = [
        "@platforms//cpu:x86_64",
        "@platforms//os:macos",
    ],
    visibility = ["//:__subpackages__"],
)

platform(
    name = "macos_arm64",
    constraint_values = [
        "@platforms//cpu:arm64",
        "@platforms//os:macos",
    ],
    visibility = ["//:__subpackages__"],
)