feat(options-doc): test doc generation for module

checks/options-doc.nix

@@ -0,0 +1,21 @@
+{ system
+, inputs
+, ...
+}:
+
+let
+  eval = inputs.nixpkgs.lib.nixosSystem {
+    inherit system;
+    modules = [
+      inputs.self.nixosModules.wsl
+      {
+        # This forces evaluation of all types/descriptions in all modules
+        documentation.nixos.includeAllModules = true;
+      }
+    ];
+  };
+in
+# Return the options JSON derivation.
+  # If any option type has a circular reference or missing attribute,
+  # evaluation will fail here.
+eval.config.system.build.manual.optionsJSON

flake.nix

@@ -77,6 +77,7 @@
         {
           nixpkgs-fmt = pkgs.callPackage ./checks/nixpkgs-fmt.nix args;
           nixpkgs-input = pkgs.callPackage ./checks/nixpkgs-input.nix args;
+          options-doc = pkgs.callPackage ./checks/options-doc.nix args;
           rustfmt = pkgs.callPackage ./checks/rustfmt.nix args;
           side-effects = pkgs.callPackage ./checks/side-effects.nix args;
           username = pkgs.callPackage ./checks/username.nix args;