anchor.diff:  
     system.defaults.trackpad.Clicking = true;
   
  -  nix.package = pkgs.nix;
  +  nix.package = pkgs.nixUnstable;
   
     environment.systemPackages =
       [ pkgs.curl
  
positive.code:       pkgs.khd
        pkgs.kwm
  
        pkgs.nix
        pkgs.nix-repl
      ];
  
  
negative.code:   nix.trustedBinaryCaches = [ https://d3i7ezr9vxxsfy.cloudfront.net ];
    nix.trustedUsers = [ "@admin" ];
  
    # programs.nix-script.enable = true;
  
    programs.tmux.enable = true;
    programs.tmux.enableSensible = true;
  