anchor.diff:      ln -s ${PropList} src/generator/data/PropList.txt
     '';
   
  -  buildFlags = [ "build" ];
  -
  -  installPhase = ''
  -    make INSTALL_ARGS="--prefix=$out --libdir=$OCAMLFIND_DESTDIR" install
  -  '';
  -
  -  createFindlibDestdir = true;
  +  doCheck = true;
   
     dontStrip = true;
   
     meta = {
       homepage = https://github.com/ocaml-community/sedlex;
       description = "An OCaml lexer generator for Unicode";
  -    license = stdenv.lib.licenses.mit;
  -    inherit (ocaml.meta) platforms;
  -    maintainers = [ stdenv.lib.maintainers.marsam ];
  +    license = lib.licenses.mit;
  +    maintainers = [ lib.maintainers.marsam ];
     };
   }
  
positive.code:     sha256 = "0gsb1jpj3mnqbjgbavi4l95gl6g4agq58j82km22fdfg63j3w3fk";
    };
  in
  stdenv.mkDerivation rec {
    name = "ocaml${ocaml.version}-sedlex-${version}";
    version = "2.1";
  
    src = fetchFromGitHub {
  
negative.code:     sha256 = "05f6qa8x3vhpdz1fcnpqk37fpnyyq13icqsk2gww5idjnh6kng26";
    };
  
    buildInputs = [ ppx_tools_versioned ocaml-migrate-parsetree ];
  
    propagatedBuildInputs = [ gen uchar ];
  
  