{
  pkgs,
  pkgs-unstable,
  cattppuccin-k9s,
  ...
}: {
  home.packages = with pkgs; [
    kubectl
    kubernetes-helm
  ];

  programs = {
    k9s = {
      enable = true;
      skin =
        let
          skin_file = "${cattppuccin-k9s}/dist/mocha.yml";  # theme - cattppuccin mocha
          skin_attr = builtins.fromJSON (builtins.readFile
            # replace 'base: &base "#1e1e2e"' with 'base: &base "default"'
            # to make fg/bg color transparent. "default" means transparent in k9s skin.
            (pkgs.runCommandNoCC "get-skin-json" {} ''
              cat ${skin_file} \
                |  sed -E 's@(base: &base ).+@\1 "default"@g' \
                | ${pkgs.yj}/bin/yj > $out
            '')
          );
        in 
          skin_attr;
    };
  };
}