Persist sound settings (for example, muted status) and do not enable wireguard in built ISO.

nix/configuration/roles/sound/default.nix

@@ -60,4 +60,14 @@
       '')
     ];
   };
+
+  environment.persistence."/persist" = lib.mkIf (!config.me.buildingIso) {
+    hideMounts = true;
+    users.talexander = {
+      directories = [
+        ".local/state/wireplumber" # Sound settings
+      ];
+    };
+  };
+
 }

nix/configuration/roles/wireguard/default.nix

@@ -8,6 +8,7 @@
 {
   imports = [ ];
 
+  config = lib.mkIf (!config.me.buildingIso) {
     networking.firewall.allowedUDPPorts = [ 51821 ];
     networking.wireguard.enable = true;
     networking.wg-quick.interfaces.drmario.configFile = "/persist/manual/wireguard/drmario.conf";
@@ -27,6 +28,7 @@
     ];
 
     systemd.services."wg-quick-wgh".preStart = "${pkgs.toybox}/bin/sleep 10";
+  };
 
   # environment.systemPackages = with pkgs; [
   #   wireguard-tools