anchor.diff:  }:
   
   let
  -  version = "3.5.0";
  +  version = "3.9.0";
   in stdenv.mkDerivation rec {
     name = "liblouis-${version}";
   
  
positive.code:   meta = with stdenv.lib; {
      description = "Open-source braille translator and back-translator";
      homepage = http://liblouis.org/;
      broken = true;
      license = licenses.lgpl21;
      maintainers = with maintainers; [ jtojnar ];
      platforms = platforms.unix;
  
negative.code:     owner = "liblouis";
      repo = "liblouis";
      rev = "v${version}";
      sha256 = "11vq9rnmrfqka3fiyrxs0q1gpvpj4m9jmrkwd1yvrq94fndgvh1m";
    };
  
    outputs = [ "out" "dev" "man" "info" "doc" ];
  