anchor.diff:    buildPhase     = "ocaml setup.ml -build";
     installPhase   = "ocaml setup.ml -install";
   
  -  meta = {
  +  meta = with stdenv.lib; {
       description = "Store data using OCaml notation";
       homepage = https://forge.ocamlcore.org/projects/odn/;
  -    license = stdenv.lib.licenses.lgpl21;
  +    license = licenses.lgpl21;
       platforms = ocaml.meta.platforms;
  -    maintainers = with stdenv.lib.maintainers; [
  -      z77z
  +    maintainers = with maintainers; [
  +      vbgl z77z
       ];
     };
   }
  
positive.code: {stdenv, fetchurl, ocaml, findlib, ocaml_typeconv, ounit}:
  
  stdenv.mkDerivation {
    name = "ocaml-data-notation-0.0.11";
  
negative.code:     sha256 = "09a8zdyifpc2nl4hdvg9206142y31cq95ajgij011s1qcg3z93lj";
    };
  
    buildInputs = [ocaml findlib ocaml_typeconv ounit camlp4];
  
    createFindlibDestdir = true;
  
  