nixcfg/machines/manager/disk.nix

{
  disko.devices = {
    disk."system" = {
      device = "/dev/disk/by-path/pci-0000:01:00.0-scsi-0:1:1:0";
      type = "disk";
      content = {
        type = "table";
        format = "gpt";
        partitions = [
          {
            index = 1;
            name = "root";
            start = "100MiB";
            end = "-4GB";
            part-type = "primary";
            fs-type = "btrfs";
            bootable = true;
            content = {
              type = "filesystem";
              format = "btrfs";
              mountpoint = "/";
            };
          }
          {
            index = 2;
            name = "swap";
            start = "-4G";
            end = "100%";
            part-type = "primary";
            fs-type = "linux-swap";
            content = {
              type = "swap";
              randomEncryption = true;
            };
          }
          {
            index = 3;
            name = "ESP";
            start = "1MiB";
            end = "100MiB";
            fs-type = "fat32";
            bootable = true;
            content = {
              type = "filesystem";
              format = "vfat";
              mountpoint = "/boot";
            };
          }
        ];
      };
    };
  };
}