anchor.diff:  
   stdenv.mkDerivation rec {
     name    = "monero-${version}";
  -  version = "0.12.3.0";
  +  version = "0.13.0.2";
   
     src = fetchgit {
       url    = "https://github.com/monero-project/monero.git";
       rev    = "v${version}";
  -    sha256 = "1609k1qn9xx37a92ai36rajds9cmdjlkqyka95hks5xjr3l5ca8i";
  +    sha256 = "078iw76ajvaj08rgnx3c13pnq8fxah1z9wwyz54fcnj2349sjbf5";
     };
   
     nativeBuildInputs = [ cmake pkgconfig git ];
  
positive.code: { stdenv, fetchgit
  , cmake, pkgconfig, git
  , boost, miniupnpc, openssl, unbound, cppzmq
  , zeromq, pcsclite, readline
  , CoreData, IOKit, PCSC
  }:
  
  
negative.code:   buildInputs = [
      boost miniupnpc openssl unbound
      cppzmq zeromq pcsclite readline
      libsodium
    ] ++ optionals stdenv.isDarwin [ IOKit CoreData PCSC ];
  
    cmakeFlags = [
  