anchor.diff:    '';
   
     postFixup = ''
  -    makeWrapper ${electron_5}/bin/electron $out/bin/typora \
  +    makeWrapper ${electron_8}/bin/electron $out/bin/typora \
         --add-flags $out/share/typora \
         "''${gappsWrapperArgs[@]}" \
         ${lib.optionalString withPandoc ''--prefix PATH : "${lib.makeBinPath [ pandoc ]}"''} \
  
positive.code:     gtk3
    ];
  
    unpackPhase = "dpkg-deb -x $src .";
  
    dontWrapGApps = true;
  
  
negative.code: 
  stdenv.mkDerivation rec {
    pname = "typora";
    version = "0.9.89";
  
    src = fetchurl {
      url = "https://www.typora.io/linux/typora_${version}_amd64.deb";
      sha256 = "0gk8j13z1ymad34zzcy4vqwyjgd5khgyw5xjj9rbzm5v537kqmx6";
    };
  
    nativeBuildInputs = [
  