{
  fetchurl,
  lib,
  stdenvNoCC,

  ocaml,

  version ? lib.versions.majorMinor ocaml.version,
}: stdenvNoCC.mkDerivation {
  pname = "ocaml-manual";
  inherit version;

  src = fetchurl {
    url = "http://caml.inria.fr/distrib/ocaml-${version}/ocaml-${version}-refman-html.tar.gz";
    hash = "sha256-NhtwltAJKxG5bwvu4hevK4xv45gRRaLEtNQ9ZW5NyvU=";
  };

  buildPhase = "";

  installPhase = ''
    mkdir -p "$out/share/doc/ocaml"
    cp -r . "$out/share/doc/ocaml/."
  '';

  meta = {
    description = "Offline manual for OCaml";
    homepage = "https://ocaml.org";
    license = lib.licenses.lgpl21Only;
    maintainers = [];
    platforms = lib.platforms.all;
  };
}