nixcfg/machines/node/disk.nix

{
  disko.devices = {
    disk."system" = {
      device = "/dev/disk/by-path/pci-0000:00:11.0-ata-1";
      type = "disk";
      content = {
        type = "table";
        format = "gpt";
        partitions = [
          {
            name = "boot";
            start = "0";
            end = "1M";
            part-type = "primary";
            flags = [ "bios_grub" ];
          }
          {
            name = "root";
            start = "1MB";
            end = "-4GB";
            part-type = "primary";
            fs-type = "btrfs";
            bootable = true;
            content = {
              type = "filesystem";
              format = "btrfs";
              mountpoint = "/";
            };
          }
          {
            name = "swap";
            start = "-4G";
            end = "100%";
            part-type = "primary";
            fs-type = "linux-swap";
            content = {
              type = "swap";
              randomEncryption = true;
            };
          }
        ];
      };
    };
  };
}