Gonna revert and modify the original flake, add back overlays from a shared file, and figure things out after

modules/system/accounts/users/nginx/default.nix

@@ -4,6 +4,7 @@
     nginx = {
       extraGroups = [ "turnserver" "virtualMail" ];
       isSystemUser = true;
+      uid = 60;
     };
   };
 }