modules: services: indexers: refactor

This is cleaner and more correct.

modules/services/indexers/default.nix

@@ -12,8 +12,9 @@ in
     nzbhydra.enable = mkEnableOption "NZBHydra2 usenet meta-indexer";
   };
 
-  config = {
-    services.jackett = lib.mkIf cfg.jackett.enable {
+  config = lib.mkMerge [
+    (lib.mkIf cfg.jackett.enable {
+      services.jackett = {
         enable = true;
       };
 
@@ -25,19 +26,25 @@ in
         };
       };
 
-    services.nzbhydra2 = lib.mkIf cfg.nzbhydra.enable {
-      enable = true;
-    };
-
       my.services.nginx.virtualHosts = [
         {
           subdomain = "jackett";
           port = jackettPort;
         }
+      ];
+    })
+
+    (lib.mkIf cfg.nzbhydra.enable {
+      services.nzbhydra2 = {
+        enable = true;
+      };
+
+      my.services.nginx.virtualHosts = [
         {
           subdomain = "nzbhydra";
           port = nzbhydraPort;
         }
       ];
-  };
+    })
+  ];
 }