fix(docs): call realPath

docs/docgen.nix

@@ -2,50 +2,43 @@
   stdenvNoCC,
   mdbook,
   nixdoc,
+  nixosOptionsDoc,
   lib,
+  excluded ? [
+    ".*flake\\.nix$"
+
+    "^docs/.*"
+  ],
 }:
+
 stdenvNoCC.mkDerivation {
   name = "SkyOS-book";
   src = ./.;
+
   nativeBuildInputs = [
     mdbook
     nixdoc
   ];
+
   patchPhase =
     let
-      excluded = [
-        ".*flake\\.nix$"
-
-        "^docs/.*"
-      ];
-
-      shouldExclude = relPath: lib.any (pattern: builtins.match pattern relPath != null) excluded;
-
+      relPath = file: lib.removePrefix (toString ../. + "/") (toString file);
       nixFiles =
         with lib.fileset;
-        let
-          allFiles = toList (fileFilter (f: f.hasExt "nix") ../.);
-        in
-        lib.filter (
-          file:
-          let
-            relPath = lib.removePrefix (toString ../. + "/") (toString file);
-          in
-          !shouldExclude relPath
-        ) allFiles;
+        lib.filter (file: !(lib.any (pattern: builtins.match pattern (relPath file) != null) excluded)) (
+          toList (fileFilter (f: f.hasExt "nix") ../.)
+        );
 
       chapters = lib.sort (a: b: a.sortKey < b.sortKey) (
         map (
           file:
           let
-
-            relPath = lib.removePrefix (toString ../. + "/") (toString file);
             mdPath =
               (
                 if baseNameOf file == "default.nix" then
-                  lib.removeSuffix "/" (dirOf relPath)
+                  lib.removeSuffix "/" (dirOf (relPath file))
                 else
-                  lib.removeSuffix ".nix" relPath
+                  lib.removeSuffix ".nix" (relPath file)
               )
               + ".md";
 
@@ -53,10 +46,11 @@ stdenvNoCC.mkDerivation {
               docs = 0;
               flake = 1;
               devShells = 2;
-              hosts = 3;
-              users = 4;
+              modules = 3;
+              hosts = 4;
+              users = 5;
             };
-            order = orderMap.${lib.head (lib.splitString "/" relPath)};
+            order = orderMap.${lib.head (lib.splitString "/" (relPath file))};
 
             category = lib.removeSuffix ".md" (lib.replaceStrings [ "/" ] [ "." ] mdPath);
             title =
@@ -74,16 +68,36 @@ stdenvNoCC.mkDerivation {
               in
               if dirPart == "." then 0 else lib.length (lib.splitString "/" dirPart);
             indent = lib.concatStringsSep "" (lib.genList (x: "    ") depth);
+
+            isModule = (r: lib.hasPrefix "modules/os" r || lib.hasPrefix "modules/home" r) (relPath file);
+            modulesEval = lib.evalModules {
+              modules = [
+                file
+                { _module.check = false; }
+              ];
+            };
+            moduleOptionsDoc =
+              (nixosOptionsDoc {
+                options = lib.removeAttrs modulesEval.options [ "_module" ];
+              }).optionsCommonMark;
           in
           {
             script = ''
               mkdir -p "src/${dirOf mdPath}"
+              echo "Documenting ${file} > src/${mdPath}"
               nixdoc \
                 --prefix "" \
                 --category "${category}" \
                 --description "${title}" \
                 --anchor-prefix "" \
                 --file "${file}" > "src/${mdPath}"
+            ''
+            + lib.optionalString isModule ''
+              echo "Adding modules documentation for ${file} > src/${mdPath}"
+              {
+                echo
+                cat ${moduleOptionsDoc}
+              } >> src/${mdPath}
             '';
             summaryLine = "${indent}- [${title}](${mdPath})";
             sortKey = toString order + mdPath;