WIP: illustrate an entire NixOS configuration as a resource

deployment/data-model-test.nix

@@ -23,6 +23,33 @@ in
           { config, ... }:
           {
             config = {
+              resources.nixos-configuration = {
+                description = "An entire NixOS configuration";
+                request =
+                  { ... }:
+                  {
+                    _class = "fediversity-resource-request";
+                    options.config = mkOption {
+                      description = "Any options from NixOS";
+                    };
+                  };
+
+                policy =
+                  { config, ... }:
+                  {
+                    _class = "fediversity-resource-policy";
+
+                    options = {
+                      extra-config = mkOptions {
+                        description = "Any options from NixOS";
+                      };
+                      apply = mkOption {
+                        type = with types; functionTo raw;
+                        default = requests: lib.mkMerge (requests ++ [ config.extra-config ]);
+                      };
+                    };
+                  };
+              };
               resources.login-shell = {
                 description = "The operator needs to be able to log into the shell";
                 request =