anchor.diff:  { config, pkgs, ... }:
   
   {
  -  imports =
  -    [
  -      ../extra.nix
  -      ./hardware-configuration.nix
  -      ../k8s-master.nix
  -    ];
  +  imports = [ ../extra.nix ./hardware-configuration.nix ../k8s-master.nix ];
   
     boot.loader.systemd-boot.enable = true;
     boot.loader.efi.canTouchEfiVariables = true;
   
     # See https://askubuntu.com/a/863301 (this fixes flooding of the kernel logs
     # with "printk messages dropped".
  -  boot.kernelParams = ["pcie_aspm=off"];
  +  boot.kernelParams = [ "pcie_aspm=off" ];
   
     boot.initrd.luks.devices = {
       luksroot = {
  -      device = "/dev/disk/by-id/nvme-SAMSUNG_MZVKW512HMJP-000H1_S34CNA0J100907-part2";
  +      device =
  +        "/dev/disk/by-id/nvme-SAMSUNG_MZVKW512HMJP-000H1_S34CNA0J100907-part2";
         preLVM = true;
       };
     };
  
positive.code:   # Enable cron service
    services.cron = {
      enable = true;
      systemCronJobs = [
        "* * * * *      l     zsh -l -c ~/syscfg/script/export-agenda.sh"
      ];
    };
  
    services.xserver = {
  
negative.code: 
    networking = {
      hostName = "k0";
      extraHosts = "";
  
      defaultGateway = "192.168.0.1";
      nameservers = [ "8.8.8.8" ];
  