{
  config,
  lib,
  pkgs,
  ...
}: {
  options = {
    morphBashToFish = lib.mkEnableOption "morphBashToFish";
  };

  config = {
    programs.fish = {
      enable = true;
      interactiveShellInit = ''
        # add dotnet completions if it exists (ie we're in a virtual environment)
        if type -q dotnet
          complete -f -c dotnet -a "(dotnet complete (commandline -cp))"
        end

        function rand_greet
          set weary "Welcome weary traveller to my shop"
          set sad "Do butterflies cry when they're sad?"
          set greetings "$weary" "$sad"
          echo -n $greetings[(random 1 (count $greetings))]
        end

        set -g fish_greeting (rand_greet)
      '';
      plugins = [
        {
          name = "grc";
          src = pkgs.fishPlugins.grc.src;
        }
      ];
    };
  };
}