{ stdenv, lib, fetchurl, which, pkg-config, ocaml, findlib, imagemagick }:

if lib.versionAtLeast ocaml.version "4.06"
then throw "magick is not available for OCaml ${ocaml.version}"
else

stdenv.mkDerivation rec {
  pname = "ocaml-magick";
  version = "0.34";

  src = fetchurl {
    url = "http://www.linux-nantes.org/~fmonnier/OCaml/ImageMagick/ImageMagick/OCaml-ImageMagick-${version}.tgz";
    sha256 = "0gn9l2qdr8gby2x8c2mb59x1kipb2plr45rbq6ymcxyi0wmzfh3q";
  };

  nativeBuildInputs = [ which pkg-config ocaml findlib ];
  buildInputs = [ imagemagick ];

  strictDeps = true;

  createFindlibDestdir = true;

  preConfigure = "substituteInPlace Makefile --replace gcc $CC";

  installTargets = [ "find_install" ];

  meta = {
    homepage = "http://www.linux-nantes.org/~fmonnier/OCaml/ImageMagick/";
    description = "ImageMagick Binding for OCaml";
    license = lib.licenses.mit;
    platforms = imagemagick.meta.platforms;
    maintainers = with lib.maintainers; [ vbgl ];
  };
}