{pkgs, ...}: {
  programs.fish = {
    enable = true;
    interactiveShellInit = ''
      set fish_greeting # Disable greeting
      fish_vi_key_bindings # Enable Vi mode
      set -U fish_color_command green
      set -U fish_color_param white
    '';
    shellAbbrs = {
      cd = "z";
      ngc = "sudo nix-collect-garbage -d";
    };
    plugins = [
      {
        name = "fzf";
        inherit (pkgs.fishPlugins.fzf) src;
      }
    ];
  };

  programs.bash = {
    enable = true;
    initExtra = ''
      if [[ $(${pkgs.procps}/bin/ps --no-header --pid=$PPID --format=comm) != "fish" && -z ''${BASH_EXECUTION_STRING} ]]
      then
        shopt -q login_shell && LOGIN_OPTION='--login' || LOGIN_OPTION=""
        exec ${pkgs.fish}/bin/fish $LOGIN_OPTION
      fi
    '';
  };
}