device: {
  disk = {
    "${device}" = {
      type = "disk";
      device = "/dev/${device}";
      content = {
        type = "gpt";
        partitions = {
          ESP = {
            size = "1G";
            type = "EF00";
            content = {
              type = "filesystem";
              format = "vfat";
              mountpoint = "/boot";
            };
          };
          ZFS = {
            size = "100%";
            content = {
              type = "zfs";
              pool = "zroot";
            };
          };
        };
      };
    };
  };
}