anchor.diff:      homepage = "http://tech.motion-twin.com/xmllight.html";
       license = lib.licenses.lgpl21;
       maintainers = [ lib.maintainers.romildo ];
  -    platforms = ocaml.meta.platforms or [ ];
  +    inherit (ocaml.meta) platforms;
     };
   }
  
positive.code: { stdenv, lib, fetchFromGitHub, ocaml, findlib }:
  let
    pname = "xml-light";
    version = "2.4";
  in
  stdenv.mkDerivation {
    name = "ocaml-${pname}-${version}";
  
    src = fetchFromGitHub {
      owner = "ncannasse";
  
negative.code: 
    createFindlibDestdir = true;
  
    installPhase = ''
      runHook preInstall
      make install_ocamlfind
      mkdir -p $out/share
      cp -vai doc $out/share/
      runHook postInstall
    '';
  
    meta = {
  