anchor.diff:  # The NixOS release to be compatible with for stateful data such as databases.
   system.stateVersion = "unstable";
   
  +######################################## /MACHINE
  +######################################## CHANNELS
  +
   # Import channels
   channels = import ../software/channels.nix;
   
  -#default channel for this machine
  +# Default channel for this machine
   default = channels.nixos-1703;
   
  -######################################## /MACHINE
  +######################################## /CHANNELS
  +######################################## IMPORTS
  +
   in
   {
  -######################################## IMPORTS
   
     # Import configuration files
     imports = [ 
  
positive.code:   
    # ssh
    services.openssh.enable = true;
   
    # smartd to monitor HDD health
    services.smartd = {
  
negative.code:       ];
      kernelModules = [ 
        "kvm-intel"
      ];
      extraModulePackages = [ ];
      # Clean /tmp on boot.
      cleanTmpDir = true;
  