anchor.diff:  
     system = {
       autoUpgrade = {
  -      channel = "https://nixos.org/channels/nixos-17.03-small";
  +      channel = "https://nixos.org/channels/nixos-unstable-small";
         dates = "19:00";
         enable = true;
       };
  
positive.code:       "vm.swappiness" = 1;
      };
  
      kernelPackages = pkgs.linuxPackages_latest;
  
      loader = {
        efi.canTouchEfiVariables = true;
  
negative.code:     hideProcessInformation = true;
  
      sudo = {
        enable = true;
        wheelNeedsPassword = true;
      };
    };
  
  