nixos/zope2: define group

untested as the module is broken (attribute 'modules' missing)

nixos/modules/misc/ids.nix

@@ -217,7 +217,7 @@ in
       #redis = 181; removed 2018-01-03
       #unifi = 183; dynamically allocated as of 2021-09-17
       uptimed = 184;
-      zope2 = 185;
+      #zope2 = 185; # dynamically allocated as of 2021-09-18
       #ripple-data-api = 186; dynamically allocated as of 2021-09-17
       mediatomb = 187;
       #rdnssd = 188; #dynamically allocated as of 2021-09-18

nixos/modules/services/web-servers/zope2.nix

@@ -103,7 +103,11 @@ in
 
   config = mkIf (cfg.instances != {}) {
 
-    users.users.zope2.uid = config.ids.uids.zope2;
+    users.users.zope2 = {
+      isSystemUser = true;
+      group = "zope2";
+    };
+    users.groups.zope2 = {};
 
     systemd.services =
       let