anchor.diff:  { config, lib, pkgs, ... }:
   {
  -  environment.systemPackages =
  -    [ pkgs.lnl.tmux
  -      pkgs.lnl.vim
  -
  -      pkgs.curl
  -      pkgs.fzf
  -      pkgs.gettext
  -      pkgs.git
  -      pkgs.jq
  -      pkgs.silver-searcher
  -
  -      pkgs.nix-repl
  -      pkgs.nox
  -    ];
  -
  -  services.nix-daemon.enable = true;
  -  services.nix-daemon.tempDir = "/nix/tmp";
  -
  -  services.activate-system.enable = true;
  -
     system.defaults.NSGlobalDomain.AppleKeyboardUIMode = 3;
     system.defaults.NSGlobalDomain.ApplePressAndHoldEnabled = false;
     system.defaults.NSGlobalDomain.InitialKeyRepeat = 10;
  
positive.code:   '';
  
    programs.zsh.loginShellInit = ''
      autoload -U promptinit && promptinit
      PROMPT='%B%(?..%? )%b⇒ '
      RPROMPT='%F{green}%~%f'
  
      bindkey -e
      setopt autocd
  
negative.code:   '';
  
    programs.zsh.enable = true;
    programs.zsh.enableBashCompletion = true;
  
    programs.zsh.promptInit = ''
      autoload -U promptinit && promptinit
  
      PROMPT='%B%(?..%? )%b⇒ '
      RPROMPT='%F{green}%~%f'
    '';
  
    programs.zsh.shellInit = ''
      cfg=$HOME/.nixpkgs/darwin-config.nix
  