sys: create defaultDesktopPack for sys and move settings into it

sys/modules/defaultDesktopPack.nix

@@ -0,0 +1,45 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+with lib; let
+  cfg = config.local.sys.defaultDesktopPack;
+in {
+  options.local.sys.defaultDesktopPack = {
+    enable = mkEnableOption "common desktop programs and services";
+  };
+  config = mkIf cfg.enable {
+    local.sys = {
+      baseline.enable = true;
+
+      audio.enable = true;
+      graphics.enable = true;
+      gtklock.enable = true;
+      steam.enable = true;
+
+      users = {
+        fabian = {
+          enable = true;
+          unixId = 1002; #TODO !!!!!!
+        };
+      };
+    };
+
+    # trivionomicon
+    local = {
+      sway.enable = true;
+      trivionomiconMotd.enable = true;
+    };
+
+    networking = {
+      networkmanager.enable = true;
+
+      #TODO
+      useDHCP = false; # The global useDHCP flag is deprecated, therefore explicitly set to false here.
+      interfaces.enp7s0.useDHCP = true; # Per-interface useDHCP will be mandatory in the future, so this generated config
+      interfaces.wlp6s0.useDHCP = true; # replicates the default behaviour.
+    };
+  };
+}