{
 boot.initrd.luks.devices = {
   "luks-847548dd-10b5-46d1-82f4-bf982a32c1b5" = {
     device = "/dev/disk/by-uuid/847548dd-10b5-46d1-82f4-bf982a32c1b5";
     allowDiscards = true;
     keyFileSize = 4096;
     keyFile = "/dev/disk/by-id/usb-Generic-_SD_MMC_27B8RE273ED5E";
     fallbackToPassword = true;
     preLVM = false;
    };
  };
}