{
  config,
  # pkgs,
  lib,
  ...
}:

let
  cfg = config.nmasur.presets.programs.nix-index;
in

{

  options.nmasur.presets.programs.nix-index.enable =
    lib.mkEnableOption "nix-index caching for command line";

  config = lib.mkIf cfg.enable {

    # Provides "command-not-found" options
    programs.nix-index = {
      enable = true;
      enableFishIntegration = true;
    };

    # Create nix-index if doesn't exist
    # Should not be necessary with the nix-index-database flake
    # home.activation.createNixIndex =
    #   let
    #     cacheDir = "${config.xdg.cacheHome}/nix-index";
    #   in
    #   lib.mkIf config.programs.nix-index.enable (
    #     config.lib.dag.entryAfter [ "writeBoundary" ] ''
    #       if [ ! -d ${cacheDir} ]; then
    #           run ${pkgs.nix-index}/bin/nix-index -f ${pkgs.path}
    #       fi
    #     ''
    #   );

  };

}