better reflect naming from diagram configuration data flow

deployment/data-model-test.nix

@@ -19,50 +19,46 @@ in
         example = eval (
           { config, ... }:
           {
-            runtime-configurations.single-ssh-host =
+            providers.single-ssh-host =
               { ... }:
               {
                 system.stateVersion = "25.05";
               };
-            runtime-environments.bar = {
+            resources.bar.runtime-environment.single-ssh-host = {
-              single-ssh-host = {
+              ssh = {
-                ssh = {
+                host = "localhost";
-                  host = "localhost";
+                username = "root";
-                  username = "root";
+                authentication.password = "";
-                  authentication.password = "";
-                };
               };
             };
-            applications.foo = {
+            applications.foo.module =
-              module =
+              { pkgs, ... }:
-                { pkgs, ... }:
+              {
-                {
+                environment.systemPackages = [
-                  environment.systemPackages = [
+                  pkgs.hello
-                    pkgs.hello
+                ];
-                  ];
+              };
-                };
-            };
             deployments.baz = {
               module = { };
-              runtime-environment = config.runtime-environments.bar;
+              runtime-environment = config.resources.bar.runtime-environment;
             };
             migrations.boo = {
               deployment = config.deployments.baz;
-              runtime-environment = config.runtime-environments.bar;
+              runtime-environment = config.resources.bar.runtime-environment;
             };
           }
         );
       in
       {
-        has-runtime-configuration = lib.isAttrs example.runtime-configurations.single-ssh-host;
+        has-provider = lib.isAttrs example.providers.single-ssh-host;
-        has-runtime-environment = lib.isAttrs example.runtime-environments.bar.single-ssh-host.module;
+        has-resource = lib.isAttrs example.resources.bar.runtime-environment.single-ssh-host.module;
         has-application = lib.isAttrs example.applications.foo.module;
         has-deployment = lib.isAttrs example.deployments.baz.module;
         has-migration = lib.isAttrs example.migrations.boo.deployment;
       };
     expected = {
-      has-runtime-configuration = true;
+      has-provider = true;
-      has-runtime-environment = true;
+      has-resource = true;
       has-application = true;
       has-deployment = true;
       has-migration = true;

deployment/data-model.nix

@@ -20,8 +20,8 @@ let
     submodule
     str
     ;
-  runtime-configuration = mkOption {
+  provider = mkOption {
-    description = "The NixOS module of a run-time environment";
+    description = "The NixOS module of a provider";
     type = deferredModule;
     default = {
       _class = "nixos";
@@ -37,9 +37,9 @@ let
           // {
             type = mergeTypes type (submodule {
               options.module = mkOption {
-                description = "The NixOS module of the run-time environment";
+                description = "The NixOS module of the provider";
                 type = deferredModule;
-                default = config.runtime-configurations.${name};
+                default = config.providers.${name};
                 readOnly = true;
               };
             });
@@ -94,13 +94,21 @@ let
         };
       }
   );
+  resource = attrTag {
+    runtime-environment = mkOption {
+      description = "A run-time environment one may deploy a NixOS configuration to.";
+      type = runtime-environment;
+    };
+  };
   application = submoduleWith {
     description = "A Fediversity application";
     modules = [
       {
         options = {
           module = mkOption {
-            description = "The NixOS module for that application, for configuring that application";
+            description = ''
+              The NixOS module to configure the application.
+            '';
             type = deferredModule;
           };
         };
@@ -147,16 +155,16 @@ let
 in
 {
   options = {
-    runtime-configurations = mkOption {
+    providers = mkOption {
-      description = "Collection of runtime environments into which applications can be deployed";
+      description = "Collection of providers for run-time environments to deploy applications to";
-      type = attrTag (genAttrs (attrNames runtime-environment.nestedTypes) (_: runtime-configuration));
+      type = attrTag (genAttrs (attrNames runtime-environment.nestedTypes) (_: provider));
     };
-    runtime-environments = mkOption {
+    resources = mkOption {
-      description = "Collection of runtime environments into which applications can be deployed";
+      description = "Collection of resources for use in Fediversity applications";
-      type = attrsOf runtime-environment;
+      type = attrsOf resource;
     };
     applications = mkOption {
-      description = "Collection of Fediversity applications";
+      description = "Collection of (available) Fediversity applications";
       type = attrsOf application;
     };
     deployments = mkOption {