{pkgs, ...}:{
  programs.fish.enable = true;

  environment.systemPackages = with pkgs; [
    nix-your-shell
    btop
    fastfetch
    wget
  ];

  programs.bash.interactiveShellInit = ''
  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
  '';
}