anchor.diff:  
   stdenv.mkDerivation rec {
     name = "gitkraken-${version}";
  -  version = "2.7.0";
  +  version = "3.3.4";
   
     src = fetchurl {
       url = "https://release.gitkraken.com/linux/v${version}.deb";
  -    sha256 = "0088vdn47563f0v9zhk1vggn3c2cfg8rhmifc6nw4zbss49si5gp";
  +    sha256 = "1djrbpm1f258cicf65ddvndpxi1izmnc12253k1zwl77z4jjbwls";
     };
   
     libPath = makeLibraryPath [
  
positive.code: 
    buildInputs = [ dpkg ];
  
    unpackPhase = "dpkg-deb -x $src .";
  
    installPhase = ''
      mkdir -p "$out/opt/gitkraken"
      cp -r usr/share/gitkraken/* "$out/opt/gitkraken"
  
      mkdir -p "$out/share/applications"
      cp $desktopItem/share/applications/* "$out/share/applications"
  
      mkdir -p "$out/share/pixmaps"
      cp usr/share/pixmaps/app.png "$out/share/pixmaps"
    '';
  
    postFixup = ''
      patchelf --set-interpreter $(cat $NIX_CC/nix-support/dynamic-linker) \
               --set-rpath "$libPath:$out/opt/gitkraken" "$out/opt/gitkraken/gitkraken"
      wrapProgram $out/opt/gitkraken/gitkraken \
        --prefix LD_PRELOAD : "${makeLibraryPath [ curl ]}/libcurl.so.4" \
        --prefix LD_PRELOAD : "${makeLibraryPath [ libgnome-keyring ]}/libgnome-keyring.so.0"
      mkdir "$out/bin"
      ln -s "$out/opt/gitkraken/gitkraken" "$out/bin/gitkraken"
    '';
  
    meta = {
  
negative.code:     libXext
      libXcursor
      libXi
      libxcb
      glib
      libXScrnSaver
      libxkbfile
  