Allow forwarding of multiple ports

flake.nix

@@ -48,12 +48,14 @@
                 type = bool;
                 default = true;
               };
-              proto = mkOption {type = proto;};
-              dest = mkOption {type = str;};
-              hostProto = mkOption {type = proto;};
-              port = mkOption {type = port;};
+              forwards = mkOption {
+                type = listOf (submodule {
+                  proto = mkOption {type = proto;};
+                  port = mkOption {type = port;};
+                  dest = mkOption {type = str;};
+                });
+              };
             };
-            config.hostProto = mkDefault config.proto;
           }));
         };
       };
@@ -65,10 +67,7 @@
         };
       in
         lib.mapAttrs' (hostname: {
-          proto,
-          hostProto,
-          port,
-          dest,
+          forwards,
           enable,
           ...
         }: let
@@ -78,7 +77,7 @@
           value = {
             inherit enable;
             script = ''
-              TS_AUTHKEY=$(cat $RUNTIME_DIRECTORY/authkey) ${lib.getExe self.packages.${pkgs.system}.default} ${hostProto} ${hostname} ${toString port} ${proto} ${dest}
+              TS_AUTHKEY=$(cat $RUNTIME_DIRECTORY/authkey) ${lib.getExe self.packages.${pkgs.system}.default} ${hostname} ${lib.concatMapStringsSep " " ({proto, port, dest}: "${proto}:${proto}:${dest}") forwards}
             '';
             wantedBy = ["multi-user.target"];
             serviceConfig = {