{
  config,
  lib,
  pkgs,
  self,
  this_nixos_config,
  ...
}:

# let
#   flakeOutPaths =
#     let
#       collector =
#         parent:
#         map (
#           child:
#           [ child.outPath ] ++ (if child ? inputs && child.inputs != { } then (collector child) else [ ])
#         ) (lib.attrValues parent.inputs);
#     in
#     lib.unique (lib.flatten (collector self));
#   dependencies = [
#     this_nixos_config.pkgs.stdenv.drvPath
#     (this_nixos_config.pkgs.closureInfo { rootPaths = [ ]; }).drvPath

#     # https://github.com/NixOS/nixpkgs/blob/f2fd33a198a58c4f3d53213f01432e4d88474956/nixos/modules/system/activation/top-level.nix#L342
#     this_nixos_config.pkgs.perlPackages.ConfigIniFiles
#     this_nixos_config.pkgs.perlPackages.FileSlurp

#     this_nixos_config.config.system.build.toplevel
#     # this_nixos_config.config.system.build.toplevel.drvPath

#     this_nixos_config.config.system.build.diskoScript
#     this_nixos_config.config.system.build.diskoScript.drvPath
#     this_nixos_config.config.system.build.destroyScript.drvPath
#     this_nixos_config.config.system.build.formatScript.drvPath
#     this_nixos_config.config.system.build.mountScript.drvPath
#     this_nixos_config.config.system.build.destroyScript
#     this_nixos_config.config.system.build.formatScript
#     this_nixos_config.config.system.build.mountScript

#     # config.system.build.diskoScript
#     # config.system.build.diskoScript.drvPath
#     # config.system.build.destroyScript.drvPath
#     # config.system.build.formatScript.drvPath
#     # config.system.build.mountScript.drvPath
#     # config.system.build.destroyScript
#     # config.system.build.formatScript
#     # config.system.build.mountScript
#   ]
#   ++ flakeOutPaths;
#   closureInfo = pkgs.closureInfo { rootPaths = dependencies; };
# in
{
  imports = [ ];

  options.me = {
    disko.enable = lib.mkOption {
      type = lib.types.bool;
      default = false;
      example = true;
      description = "Whether we want to install disko.";
    };

    disko.offline.enable = lib.mkOption {
      type = lib.types.bool;
      default = false;
      example = true;
      description = "Whether we want to install disko.";
    };
  };

  config = lib.mkIf config.me.disko.enable (
    lib.mkMerge [
      {
        environment.systemPackages = with pkgs; [
          disko
        ];
      }
      (lib.mkIf config.me.disko.offline.enable {
        # exec ${pkgs.disko}/bin/disko-install --flake '${self}#${config.networking.hostName}' --disk main '/dev/nvme0n1' --write-efi-boot-entries
        #${pkgs.disko}/bin/disko --mode destroy,format,mount '${self}/hosts/${config.networking.hostName}/disk-config.nix'

        environment.systemPackages = with pkgs; [
          (pkgs.writeShellScriptBin "install-nixos-unattended" ''
            set -xeuo pipefail
            IFS=$'\n\t'

            #${this_nixos_config.config.system.build.destroyScript}

            #${this_nixos_config.config.system.build.formatScript}

            ${this_nixos_config.config.system.build.mountScript}

            ${pkgs.nixos-install}/bin/nixos-install --substituters "" --no-channel-copy --no-root-password --flake '${self}#${config.networking.hostName}'

            #${pkgs.nixos-install}/bin/nixos-install --substituters "" --no-channel-copy --no-root-password --system '${this_nixos_config.config.system.build.toplevel}'
          '')
        ];

        # environment.etc."install-closure".source = "${closureInfo}/store-paths";
      })
    ]
  );
}