anchor.diff:  
   , curl
   , googletest
  -, openssl
  +, openssl_1-0-2
   , xorg
   }:
   
   let
  -  version = "1.8.5";
  +  version = "1.8.7";
   in
   stdenv.mkDerivation {
     name = "synergy-${version}";
  
positive.code:   buildInputs = [
      curl
      googletest
      openssl
      xorg.fixesproto
      xorg.inputproto
      xorg.kbproto
  
negative.code:     owner = "symless";
      repo = "synergy";
      rev = "v${version}-stable";
      sha256 = "8301b2851089ad74c882c0d25586e010e64378d9061f8acc9c4ed8440c5bf84e";
    };
  
    nativeBuildInputs = [
  