docs: adapt builder functions for ndg

Signed-off-by: NotAShelf <raf@notashelf.dev>
Change-Id: I6a6a6964720fae8f3db129835efa5d5df956c3ef

docs/default.nix

@@ -92,7 +92,7 @@
 
   # Generate the HTML manual pages
   html = pkgs.callPackage ./manual.nix {
-    inherit release;
+    inherit inputs release;
     inherit (nvimModuleDocs) optionsJSON;
   };
 in {

docs/manual.nix

@@ -1,38 +1,47 @@
 {
-  lib,
+  inputs,
   stdenvNoCC,
-  fetchzip,
   runCommandLocal,
   # build inputs
-  nixos-render-docs,
-  documentation-highlighter,
-  dart-sass,
   path,
   # nrd configuration
   release,
   optionsJSON,
 } @ args: let
   manual-release = args.release or "unstable";
-
-  scss-reset = fetchzip {
-    url = "https://github.com/Frontend-Layers/scss-reset/archive/refs/tags/1.4.2.zip";
-    hash = "sha256-cif5Sx8Ca5vxdw/mNAgpulLH15TwmzyJFNM7JURpoaE=";
-  };
-
-  compileStylesheet = runCommandLocal "compile-nvf-stylesheet" {} ''
-    mkdir -p $out
-
-    tmpfile=$(mktemp -d)
-    trap "rm -r $tmpfile" EXIT
-
-    ln -s "${scss-reset}/build" "$tmpfile/scss-reset"
-
-    ${dart-sass}/bin/sass --load-path "$tmpfile" \
-      ${./static/style.scss} "$out/style.css"
-
-    echo "Generated styles"
-  '';
 in
+  runCommandLocal "hjem-docs" {
+    nativeBuildInputs = [inputs.ndg.packages.${stdenvNoCC.system}.ndg];
+  } ''
+    mkdir -p $out/share/doc
+
+    # Copy the markdown sources to be processed by ndg
+    cp -rvf ${./manual} ./manual
+
+    substituteInPlace ./manual/options.md \
+      --subst-var-by OPTIONS_JSON ./config-options.json
+
+    substituteInPlace ./manual/index.md \
+      --subst-var-by NVF_VERSION ${manual-release}
+
+    substituteInPlace ./manual/hacking/additional-plugins.md \
+      --subst-var-by NVF_REPO "https://github.com/notashelf/nvf/blob/${manual-release}"
+
+    ndg html \
+      --jobs $NIX_BUILD_CORES --title "NVF" \
+      --module-options ${optionsJSON}/share/doc/nixos/options.json \
+      --manpage-urls ${path}/doc/manpage-urls.json \
+      --options-depth 3 \
+      --generate-search true \
+      --highlight-code true \
+      --input-dir ./manual \
+      --output-dir "$out/share/doc"
+
+    # Hydra support. Probably not necessary.
+    mkdir -p $out/nix-support/
+    echo "doc manual $dest index.html" >> $out/nix-support/hydra-build-products
+  ''
+/*
 stdenvNoCC.mkDerivation {
   name = "nvf-manual";
   src = builtins.path {
@@ -65,14 +74,7 @@ in
       ${./static/script}/anchor-use.js \
       ${./static/script}/search.js
 
-      substituteInPlace ./options.md \
-        --subst-var-by OPTIONS_JSON ./config-options.json
 
-      substituteInPlace ./manual.md \
-        --subst-var-by NVF_VERSION ${manual-release}
-
-      substituteInPlace ./hacking/additional-plugins.md \
-        --subst-var-by NVF_REPO "https://github.com/notashelf/nvf/blob/${manual-release}"
 
     # Move compiled stylesheet
     cp -vt $dest \
@@ -112,3 +114,5 @@ in
       echo "doc manual $dest index.html" >> $out/nix-support/hydra-build-products
   '';
 }
+*/
+