Add of roundcube

configuration.nix

@@ -9,9 +9,12 @@
     [ # Include the results of the hardware scan.
       ./hardware-configuration.nix
       ./package.nix
-      ./searXNG.nix
+      ./module/searXNG.nix
+      ./module/roundcube.nix
     ];
 
+  nix.settings.experimental-features = [ "nix-command" "flakes" ];
+
   # Bootloader.
   boot.loader.systemd-boot.enable = true;
   boot.loader.efi.canTouchEfiVariables = true;
@@ -113,13 +116,6 @@
 	  useRoutingFeatures = "server";  # or "client" / "both"
 	};
 
-	services.roundcube = {
-	     enable = false;
-	     hostName = "webmail.example.com";
-	  };
-
-	services.nginx.enable = false;
-
 	networking.firewall = {
 		enable = true;
 		allowedTCPPorts = [ 443 ];