{ ... }:

{
  disko.devices = {
    master = {
      type = "disk";
      device = ""; # [managed by install.sh] { device }
      content = {
        type = "gpt";
        partitions = {
          ESP = {
            priority = 1;
            name = "efi";
            start = "1M";
            end = "1024M";
            type = "EF00";
            content = {
              type = "filesystem";
              format = "vfat";
              mountpoint = "/boot";
              mountOptions = [
                "umask=0077"
                "noatime"
              ];
            };
          };
          root = {
            size = "100%";
            content = {
              type = "btrfs";
              extraArgs = [ "-f" "-L nixos" ];
              postCreateHook = ''
                TMP_MNT=$(mktemp -d)
                MNT_PART="" # [managed by install.sh] { root partition }
                mount "$MNT_PART" "$TMP_MNT" -o subvol=/
                trap 'umount "$TMP_MNT"; rm -rf "$TMP_MNT"' EXIT
                btrfs subvolume snapshot "$TMP_MNT/root" "$TMP_MNT/blank"
              '';
              subvolumes = {
                "/root" = {
                  mountpoint = "/";
                  mountOptions = [
                    "noatime"
                    "compress=zstd"
                  ];
                };

                "/nix" = {
                  mountpoint = "/nix";
                  mountOptions = [
                    "noatime"
                    "compress=zstd"
                  ];
                };
              };
            };
          };
        };
      };
    };
  };
}