Exclude TYPO3 general calendar from notifications

It is not my calendar and only synced to have an overview.
Events in there are not important to me and should not notify me.

home/modules/programs/khal-notification.nix

@@ -17,7 +17,7 @@ let
 
     text = ''
       date=$(date "+%H:%M:00")
-      events=$(khal list -d contact_birthdays --notstarted "$date" "$1" | (grep -v -e "Urlaub" -e "Today"; true))
+      events=$(khal list -d contact_birthdays -d typo3 --notstarted "$date" "$1" | (grep -v -e "Urlaub" -e "Today"; true))
       if [ -z "$events" ]; then
         exit 0;
       fi

home/programs/firefox.nix

@@ -71,6 +71,17 @@ in {
             icon = "''${pkgs.nixos-icons}/share/icons/hicolor/scalable/apps/nix-snowflake.svg";
             definedAliases = [ "@np" ];
           };
+          "ArchLinux Wiki" = {
+            urls = [{
+              template = "https://wiki.archlinux.org/index.php";
+              params = [
+                { name = "search"; value = "{searchTerms}"; }
+              ];
+            }];
+
+            icon = ./../../assets/arch.png;
+            definedAliases = [ "@arch" ];
+          };
           "Packagist" = {
             urls = [{
               template = "https://packagist.org/";