let
  mkDrive = bootMountpoint: {
    type = "disk";
    content = {
      type = "gpt";
      partitions = {
        boot = {
          size = "1M";
          type = "EF02"; # for grub MBR
        };
        ESP = {
          size = "512M";
          type = "EF00";
          content = {
            type = "filesystem";
            format = "vfat";
            mountpoint = bootMountpoint;
            mountOptions = ["umask=0077"];
          };
        };
        swap = {
          size = "8G";
          content = {
            type = "swap";
            discardPolicy = "both";
          };
        };
        mdadm = {
          size = "100%";
          content = {
            type = "mdraid";
            name = "raid1";
          };
        };
      };
    };
  };
in {
  disko.devices = {
    disk = {
      one = mkDrive "/boot";
      two = mkDrive "/boot2";
    };

    mdadm = {
      raid1 = {
        type = "mdadm";
        level = 1;
        content = {
          type = "gpt";
          partitions.primary = {
            size = "100%";
            content = {
              type = "filesystem";
              format = "ext4";
              mountpoint = "/";
            };
          };
        };
      };
    };
  };
}