anchor.diff:      EOF
     '';
   
  -  createFindlibDestdir = true;
  +  preInstall = ''
  +    mkdir -p $out/lib/ocaml/${ocaml.version}/site-lib/stublibs
  +  '';
   
     meta = with stdenv.lib; {
       description = "An OCaml library for reading, writing and modifying PDF files";
  
positive.code:     sha256 = "1z8h6bjzmlscr6h6kdvzj8kspifb4n9dg7zi54z1cv2qi03kr8dk";
    };
  
    buildInputs = [ ocaml findlib ];
  
    # Version number in META file is wrong
    patchPhase = ''
  
negative.code: { stdenv, fetchFromGitHub, which, ocaml, findlib }:
  
  if !stdenv.lib.versionAtLeast ocaml.version "4.02"
  then throw "camlpdf is not available for OCaml ${ocaml.version}"
  