diff --git a/deployment/data-model-test.nix b/deployment/data-model-test.nix
index 4edec009..c5411688 100644
--- a/deployment/data-model-test.nix
+++ b/deployment/data-model-test.nix
@@ -127,7 +127,10 @@ in
                 };
               environments.single-nixos-vm = environment: {
                 _class = "fediversity-environment";
-                resources.shell.login-shell.username = "operator";
+                resources.shell.login-shell = {
+                  username = "operator";
+                  wheel = false; # FIXME: default needs the type uncommented
+                };
                 implementation = requests: {
                   _class = "nixos";
                   users.users = (
diff --git a/deployment/data-model.nix b/deployment/data-model.nix
index f18223b4..cd0d7b77 100644
--- a/deployment/data-model.nix
+++ b/deployment/data-model.nix
@@ -149,19 +149,24 @@ in
                   Setting this is optional, but provides a place to declare that information for programmatic use in the resource mapping.
                 '';
                 # TODO: maybe transpose, and group the resources by type instead
-                type = attrsOf (
-                  attrTag (
-                    lib.mapAttrs (
-                      _name: resource:
-                      mkOption {
-                        type = submoduleWith {
-                          class = "fediversity-resource-policy";
-                          modules = [ resource.policy ];
-                        };
-                      }
-                    ) config.resources
-                  )
-                );
+                # # FIXME: error: The option `environments.single-nixos-vm.resources.shell.login-shell.apply' does not exist. Definition values:
+                # # - In `<unknown-file>': <function>
+                # # However there are no options defined in `environments.single-nixos-vm.resources.shell.login-shell'. Are you sure you've
+                # # declared your options properly? This can happen if you e.g. declared your options in `types.submodule'
+                # # under `config' rather than `options'.
+                # type = attrsOf (
+                #   attrTag (
+                #     lib.mapAttrs (
+                #       _name: resource:
+                #       mkOption {
+                #         type = submoduleWith {
+                #           class = "fediversity-resource-policy";
+                #           modules = [ resource.policy ];
+                #         };
+                #       }
+                #     ) config.resources
+                #   )
+                # );
               };
               implementation = mkOption {
                 description = "Mapping of resources required by applications to available resources; the result can be deployed";