anchor.diff:    };
   in
   
  -stdenv.mkDerivation rec {
  -  name = "ocaml-lwt-${version}";
  +buildOcaml rec {
  +  name = "lwt";
     inherit (param) version;
   
     src = fetchzip {
  
positive.code: { stdenv, fetchzip, which, cryptopp, ocaml, findlib, ocamlbuild, camlp4
  , ocaml_react, ocaml_ssl, libev, pkgconfig, ncurses, ocaml_oasis, glib
  , ppx_tools, result, cppo
  , ppxSupport ? stdenv.lib.versionAtLeast ocaml.version "4.02"
  
negative.code: 
    createFindlibDestdir = true;
  
    hasSharedObjects = true;
  
    meta = with stdenv.lib; {
      homepage = http://ocsigen.org/lwt;
      description = "Lightweight thread library for Objective Caml";
  