foo = select(variant("VARIANT"), {
    "x86": "my_x86",
    "x86_64": [
        "x86",
        "x64",
    ],
    "arm": {
        some: "aarch",
        value: "aarch64",
    },
    default: 0,
})

foo = select(
    variant("VARIANT"),
    {
        "x86": "my_x86",
        "x86_64": [
            "x86",
            "x64",
        ],
        "arm": {
            some: "aarch",
            value: "aarch64",
        },
        default: 0,
    }
)

foo = select((
    arch(),
    os(),
), {
    (default, default): [],
})

foo = select(
    (arch(), os()),
    {
        (default, default): [],
    }
)

// We're really getting into more and more unlikely choices here...
foo = select(
    (
        arch(),
        os(),
    ),
    {
        (default, default): [],
    }
)

foo = select((arch(), os()), {
    (
        default,
        default,
    ): [],
})