{lib, stdenv, fetchurl, ocaml, findlib, easy-format}:
let
  pname = "biniou";
  version = "1.0.9";
  webpage = "http://mjambon.com/${pname}.html";
in

assert lib.versionAtLeast (lib.getVersion ocaml) "3.11";

stdenv.mkDerivation rec {

  name = "${pname}-${version}";

  src = fetchurl {
    url = "http://mjambon.com/releases/${pname}/${name}.tar.gz";
    sha256 = "14j3hrhbjqxbizr1pr8fcig9dmfzhbjjwzwyc99fcsdic67w8izb";
  };

  nativeBuildInputs = [ ocaml findlib ];
  buildInputs = [ easy-format ];

  strictDeps = true;

  createFindlibDestdir = true;

  makeFlags = [ "PREFIX=$(out)" ];

  preBuild = ''
    mkdir $out/bin
  '';

  meta = with lib; {
    description = "A binary data format designed for speed, safety, ease of use and backward compatibility as protocols evolve";
    homepage = webpage;
    license = licenses.bsd3;
    maintainers = [ maintainers.vbgl ];
    platforms = ocaml.meta.platforms or [];
  };
}