# unpackPhase
# patchPhase
# configurePhase
# buildPhase
# checkPhase
# installPhase
# fixupPhase
# installCheckPhase
# distPhase
{
  lib,
  stdenv,
  k8s,
  kubectl,
  config_name,
  config_user,
  config_server,
  ...
}:
stdenv.mkDerivation (finalAttrs: {
  name = "k8s-client-config-${config_name}";
  nativeBuildInputs = [ kubectl ];
  buildInputs = [ ];

  unpackPhase = "true";

  buildPhase = ''
    kubectl config set-cluster kubernetes-the-hard-way \
      --certificate-authority=${k8s.ca}/ca.crt \
      --embed-certs=true \
      --server=${lib.strings.escapeShellArg config_server} \
      --kubeconfig=${config_name}.kubeconfig

    kubectl config set-credentials ${config_user} \
      --client-certificate=${k8s.keys."${config_name}"}/${config_name}.crt \
      --client-key=${k8s.keys."${config_name}"}/${config_name}.key \
      --embed-certs=true \
      --kubeconfig=${config_name}.kubeconfig

    kubectl config set-context default \
      --cluster=kubernetes-the-hard-way \
      --user=${config_user} \
      --kubeconfig=${config_name}.kubeconfig

    kubectl config use-context default \
      --kubeconfig=${config_name}.kubeconfig
  '';

  installPhase = ''
    mkdir "$out"
    cp "${config_name}.kubeconfig" $out/
  '';
})