doc/default.nix: make the manual build on more than one core (#225921)

* doc/default.nix: make the manual build on more than one core Let's build the manual with more than one core. Maybe people will take better care of it now that it is less painful to build.
NixOS · Apr 25, 2023 · ed312cb · ed312cb
1 parent e7e169c
commit ed312cb
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diff --git a/doc/Makefile b/doc/Makefile
@@ -19,6 +19,9 @@ pandoc_flags = --extract-media=$(pandoc_media_dir) \
 .PHONY: all
 all: validate format out/html/index.html out/epub/manual.epub
 
+.PHONY: render-md
+render-md: ${MD_TARGETS}
+
 .PHONY: debug
 debug:
 	nix-shell --run "xmloscopy --docbook5 ./manual.xml ./manual-full.xml"

diff --git a/doc/default.nix b/doc/default.nix
@@ -20,6 +20,10 @@ in pkgs.stdenv.mkDerivation {
     ln -s ${doc-support} ./doc-support/result
   '';
 
+  preBuild = ''
+    make -j$NIX_BUILD_CORES render-md
+  '';
+
   installPhase = ''
     dest="$out/share/doc/nixpkgs"
     mkdir -p "$(dirname "$dest")"