modules/files: don't include modules in the docs

This means we no longer need to spoof the module in the docs implementation.

Instead, we supply the (optional) special arg `isDocs` to `evalModules`.

docs/default.nix

@@ -56,35 +56,7 @@ let
       ) opt.declarations;
     };
 
-  nixvmConfigType = lib.mkOptionType {
-    name = "nixvim-configuration";
-    description = "nixvim configuration options";
-    descriptionClass = "noun";
-    # Evaluation is irrelevant, only used for documentation.
-  };
-
-  # Construct our own top-level modules, because we want to stub the `files` option
-  # FIXME: add a way to handle this with specialArgs
-  topLevelModules = [
-    ../modules
-    ../modules/top-level/output.nix
-    # Fake module to avoid a duplicated documentation
-    (lib.setDefaultModuleLocation "${nixvimPath}/wrappers/modules/files.nix" {
-      options.files = lib.mkOption {
-        type = lib.types.attrsOf nixvmConfigType;
-        description = "Extra files to add to the runtimepath";
-        example = {
-          "ftplugin/nix.lua" = {
-            options = {
-              tabstop = 2;
-              shiftwidth = 2;
-              expandtab = true;
-            };
-          };
-        };
-      };
-    })
-  ];
+  modules = [ ../modules/top-level ];
 
   hmOptions = builtins.removeAttrs (lib.evalModules {
     modules = [ (import ../wrappers/modules/hm.nix { inherit lib; }) ];
@@ -95,10 +67,11 @@ rec {
     (pkgsDoc.nixosOptionsDoc {
       inherit
         (lib.evalModules {
-          modules = topLevelModules;
+          inherit modules;
           specialArgs = {
             inherit helpers;
             defaultPkgs = pkgsDoc;
+            isDocs = true;
           };
         })
         options
@@ -112,8 +85,11 @@ rec {
 # > sandbox-exec: pattern serialization length 69298 exceeds maximum (65535)
 // lib.optionalAttrs (!pkgsDoc.stdenv.isDarwin) {
   docs = pkgsDoc.callPackage ./mdbook {
-    inherit transformOptions;
-    modules = topLevelModules;
-    inherit helpers hmOptions;
+    inherit
+      helpers
+      modules
+      hmOptions
+      transformOptions
+      ;
   };
 }

docs/mdbook/default.nix

@@ -14,6 +14,7 @@ let
     specialArgs = {
       inherit helpers;
       defaultPkgs = pkgs;
+      isDocs = true;
     };
   };
 

modules/top-level/files/default.nix

@@ -3,28 +3,42 @@
   config,
   lib,
   helpers,
+  specialArgs,
   ...
 }:
 let
   inherit (lib) types;
+  isDocs = specialArgs.isDocs or false;
+
   fileModuleType = types.submoduleWith {
     shorthandOnlyDefinesConfig = true;
     specialArgs = {
       inherit helpers;
       defaultPkgs = pkgs;
     };
-    modules = [
+    # Don't include the modules in the docs, as that'd be redundant
+    modules = lib.optionals (!isDocs) [
       ../../.
       ./submodule.nix
     ];
+    description = "Nixvim configuration";
   };
 in
 {
   options = {
     files = lib.mkOption {
       type = types.attrsOf fileModuleType;
-      description = "Files to include in the Vim config.";
+      description = "Extra files to add to the runtimepath";
       default = { };
+      example = {
+        "ftplugin/nix.lua" = {
+          opts = {
+            tabstop = 2;
+            shiftwidth = 2;
+            expandtab = true;
+          };
+        };
+      };
     };
 
     filesPlugin = lib.mkOption {