def patch_service_account_default(
        kubeconfig: p.Output,
        namespace: k8s.core.v1.Namespace,
        image_pull_secret_name: str,
) -> None:
    """Patches default serviceaccount of namespace with image pull secret."""
    serviceaccount_patch = p.Output.all(
            kubeconfig=kubeconfig,
            namespace_metadata=namespace.metadata,
    ).apply(
            lambda args:
            subprocess.run(
                    f"kubectl --kubeconfig=<(echo '{args['kubeconfig']}')"
                    f" -n {args['namespace_metadata']['name']}"
                    ' patch serviceaccount default'
                    ''' -p '{"imagePullSecrets": [{'''
                    f'"name": "{image_pull_secret_name}"'
                    '''}]}' ''',
                    executable='/bin/bash',
                    shell=True,
                    check=True,
                    capture_output=True,
            ),
    )

    serviceaccount_patch.apply(
            lambda results:
            p.info(
                    msg=results.stdout.decode(),
                    resource=namespace,
            ) if results.stdout else None,
    )
    serviceaccount_patch.apply(
            lambda results:
            p.error(
                    msg=results.stderr.decode(),
                    resource=namespace,
            ) if results.stderr else None,
    )