anchor.diff:      sed -i 's|\/opt\/Mullvad.*VPN|'$out'/bin|g' $out/share/applications/mullvad-vpn.desktop
       sed -i 's|\/opt\/Mullvad.*VPN/resources|'$out'/bin|g' $out/share/mullvad/resources/mullvad-daemon.service
   
  -    ln -s $out/share/mullvad/mullvad-vpn $out/bin/mullvad-vpn
  +    ln -s $out/share/mullvad/mullvad-{gui,vpn} $out/bin/
       ln -s $out/share/mullvad/resources/mullvad-daemon $out/bin/mullvad-daemon
   
       mkdir -p $out/etc/systemd/system
  
positive.code: 
  stdenv.mkDerivation rec {
    pname = "mullvad-vpn";
    version = "2019.7";
  
    src = fetchurl {
      url = "https://www.mullvad.net/media/app/MullvadVPN-${version}_amd64.deb";
      sha256 = "1hjndcdkin98l6jv39r98zfw33qg0gnvlv8q80qsj5x36a19d4v9";
    };
  
    nativeBuildInputs = [
  
negative.code:     changelog = "https://github.com/mullvad/mullvadvpn-app/blob/${version}/CHANGELOG.md";
      license = licenses.gpl3;
      platforms = [ "x86_64-linux" ];
      maintainers = [ maintainers.xfix ];
    };
  
  }
  