updated modules in flake

nix/hm-module.nix

@@ -1,15 +1,72 @@
-{ config, lib, pkgs, ... }:
-let
-  cfg = config.dyn-gandi;
+self: {
+  config,
+  lib,
+  pkgs,
+  ...
+}: let
+  cfg = config.services.dyn-gandi;
+  inherit (lib) mkIf mkEnableOption mkOption types;
 in {
+  options.services.dyn-gandi = {
+    enable = mkEnableOption "dyn-gandi";
 
-  options.dyn-gandi = {
-    enable = lib.mkEnableOption null // {
-      description = lib.mdDoc '''';
+    timer = lib.mkOption {
+      type = lib.types.int;
+      default = 0;
+      description = lib.mdDoc ''
+        The time intervall in seconds the script should be repeated.
+        0 disables automatic starts.
+      '';
+    };
+
+    settings = mkOption {
+      type = with types; let
+        valueType = nullOr (oneOf [
+          bool
+          int
+          float
+          str
+          path
+          (attrsOf valueType)
+          (listOf valueType)
+        ]);
+      in
+        valueType;
+
+      default = {api = {"example.com" = ["@" "www"];};};
+      example = {
+        General = {
+          disabledTrayIcon = true;
+          showStartupLaunchMessage = false;
+        };
+      };
+      description = '''';
     };
   };
 
-  config = lib.mkIf cfg.enable {
+  config = mkIf cfg.enable {
+    home.packages = [self.packages.x86_64-linux.default];
 
-};
-}
+    xdg.configFile."dyn-gandi/config.json" = {
+      text = builtins.toJSON cfg.settings;
+    };
+
+    systemd.user.services.dyn-gandi =
+      mkIf cfg.timer
+      != 0 {
+        Unit = {
+          Description = "DNS Updater tool for Gandi.net";
+          After = ["graphical-session-pre.target"];
+          PartOf = ["graphical-session.target"];
+        };
+      };
+    systemd.user.timers.dyn-gandi = {
+      wantedBy = ["timers.target"];
+      timerConfig = {
+        OnBootSec = "0s";
+        OnUnitActiveSec = "${cfg.timer}s";
+        Unit = "dyn-gandi.service";
+      };
+    };
+  };
+}

nix/module.nix

@@ -0,0 +1,16 @@
+inputs: { config, lib, pkgs, ... }:
+let
+  cfg = config.services.dyn-gandi;
+  inherit (lib) mkIf mkEnableOption;
+  #package = inputs.self.packages.${pkgs.stdenv.hostPlatform.system}.default;
+in {
+
+  options.services.dyn-gandi = {
+    enable = mkEnableOption null;
+  };
+
+  config = mkIf cfg.enable {
+    environment.systemPackages = [ cfg.package ];
+  }
+
+}