anchor.diff:            an interactive prompt (keylocation=prompt) and from a file (keylocation=file://).
           '';
         };
  -
       };
   
       services.zfs.autoSnapshot = {
  
positive.code: let
  
    cfgZfs = config.boot.zfs;
    cfgSnapshots = config.services.zfs.autoSnapshot;
    cfgSnapFlags = cfgSnapshots.flags;
    cfgScrub = config.services.zfs.autoScrub;
  
negative.code:               ${cfgZfs.package}/sbin/zfs set nixos:shutdown-time="$(date)" "${pool}"
              '';
            };
  
          createZfsService = serv:
            nameValuePair serv {
              after = [ "systemd-modules-load.service" ];
  