anchor.diff:    meta = with lib; {
       homepage = "https://www.five-ten-sg.com/libpst/";
       description = "A library to read PST (MS Outlook Personal Folders) files";
  -    license = licenses.gpl2;
  -    maintainers = [maintainers.tohl];
  +    license = licenses.gpl2Plus;
  +    maintainers = [ maintainers.tohl ];
       platforms = platforms.unix;
     };
   }
  
positive.code:     sha256 = "11wrf47i3brlxg25wsfz17373q7m5fpjxn2lr41dj252ignqzaac";
    };
  
    nativeBuildInputs = [ autoreconfHook pkg-config ];
    buildInputs = [
      boost libgsf bzip2
      xmlto gettext imagemagick doxygen
    ];
  
    configureFlags = [
      "--enable-python=no"
    ];
  
    doCheck = true;
  
negative.code: { lib
  , stdenv
  , fetchurl
  , autoreconfHook
  , pkg-config
  , bzip2
  , doxygen
  , gettext
  , imagemagick
  , libgsf
  , xmlto
  }:
  
  stdenv.mkDerivation rec {
    name = "libpst-0.6.75";
  