{
  config,
  lib,
  ...
}:
with lib; let
  cfg = config.system.disks;
  defaultMountOptions = ["compress-force=zstd:15"];
in {
  options.system.disks = {
    disk = mkOption {
      type = lib.types.path;
      example = literalExpression "/dev/disk/by-id/ata-WDC_WD10SDRW-11A0XS0_WD-WXP2A901KJN5";
      description = lib.mdDoc "Path to the disk";
    };
  };

  config = {
    disko.devices = {
      disk.main = {
        device = cfg.disk;
        type = "disk";
        content = {
          type = "table";
          format = "gpt";
          partitions = [
            {
              name = "boot";
              start = "0";
              end = "1M";
              part-type = "primary";
              flags = ["bios_grub"];
            }
            {
              name = "root";
              # leave space for the grub aka BIOS boot
              start = "1M";
              end = "100%";
              part-type = "primary";
              bootable = true;
              content = {
                type = "btrfs";
                extraArgs = ["-f" "--label nixos"]; # f: Override existing partitions
                subvolumes = {
                  "nix" = {
                    mountpoint = "/nix";
                    mountOptions = defaultMountOptions;
                  };
                  "persistent-storage" = {
                    mountpoint = "/srv";
                    mountOptions = defaultMountOptions;
                  };
                  "persistent-storage@snapshots" = {
                    mountpoint = "/srv/.snapshots";
                    mountOptions = defaultMountOptions;
                  };
                  "boot" = {
                    mountpoint = "/boot";
                    mountOptions = defaultMountOptions;
                  };
                };
              };
            }
          ];
        };
      };
      nodev = {
        "/" = {
          fsType = "tmpfs";
          mountOptions = ["defaults" "size=6G" "mode=755"];
        };
      };
    };
    fileSystems = {
      "/srv" = {
        neededForBoot = true;
      };
      "/boot" = {
        neededForBoot = true;
      };
    };
  };
}