def METHOD_NAME() -> Sequence["spack.config.ConfigScope"]:
    tty.debug("[BOOTSTRAP CONFIG SCOPE] name=_builtin")
    config_scopes: MutableSequence["spack.config.ConfigScope"] = [
        spack.config.InternalConfigScope("_builtin", spack.config.CONFIG_DEFAULTS)
    ]
    configuration_paths = (spack.config.CONFIGURATION_DEFAULTS_PATH, ("bootstrap", _config_path()))
    for name, path in configuration_paths:
        platform = spack.platforms.host().name
        platform_scope = spack.config.ConfigScope(
            "/".join([name, platform]), os.path.join(path, platform)
        )
        generic_scope = spack.config.ConfigScope(name, path)
        config_scopes.extend([generic_scope, platform_scope])
        msg = "[BOOTSTRAP CONFIG SCOPE] name={0}, path={1}"
        tty.debug(msg.format(generic_scope.name, generic_scope.path))
        tty.debug(msg.format(platform_scope.name, platform_scope.path))
    return config_scopes