data model: add classes

specifies classes in the data model, raising these to from `_class`
model attributes to `subModuleWith`'s `class` parameter where possible.

note: resource policy has remained as to use `deferredModuleWith`
(rather than `submoduleWith`) to ensure evaluation will go thru.

deployment/data-model-test.nix

@@ -68,8 +68,9 @@ in
                         default = false;
                       };
                     };
-                    config.resource-type = types.raw; # TODO: splice out the user type from NixOS
-                    config.apply =
+                    config = {
+                      resource-type = types.raw; # TODO: splice out the user type from NixOS
+                      apply =
                         requests:
                         let
                           # Filter out requests that need wheel if policy doesn't allow it
@@ -88,6 +89,7 @@ in
                         };
                     };
                   };
+              };
               applications.hello =
                 { ... }:
                 {
@@ -151,7 +153,7 @@ in
           }
         );
         resources = fediversity.applications.hello.resources fediversity.example-configuration.applications.hello;
-        hello-shell = (resources).resources.hello.login-shell;
+        hello-shell = resources.resources.hello.login-shell;
         environment = fediversity.environments.single-nixos-vm.resources.operator-environment.login-shell;
         result = mkDeployment {
           modules = [
@@ -160,7 +162,7 @@ in
         };
 
       in
-      rec {
+      {
         number-of-resources = with lib; length (attrNames fediversity.resources);
         inherit (fediversity) example-configuration;
         hello-package-exists = hello-shell.packages ? hello;
@@ -172,7 +174,7 @@ in
           in
           {
             inherit (operator) isNormalUser;
-            packages = with lib; map (p: "${p.pname}") operator.packages;
+            packages = map (p: "${p.pname}") operator.packages;
             extraGroups = operator.extraGroups;
           };
         deployment = {

deployment/data-model.nix

@@ -33,7 +33,6 @@ let
       inputs.nixops4.modules.nixops4Deployment.default
 
       {
-        _class = "nixops4Deployment";
         _module.args = {
           resourceProviderSystem = builtins.currentSystem;
           resources = { };
@@ -78,7 +77,7 @@ in
                         # and then also rename this to be consistent with the application's resource mapping
                         options.apply = mkOption {
                           description = "Apply the policy to a request";
-                          type = with types; functionTo policy.config.resource-type;
+                          type = functionTo policy.config.resource-type;
                         };
                       })
                     ];