anchor.diff:      tweeny
       mtxclient
       olm
  -    boost
  +    boost17x
       lmdb
       spdlog
       cmark
       qtbase
       qtmultimedia
       qttools
  +    qtquickcontrols2
  +    qtgraphicaleffects
     ] ++ lib.optional stdenv.isDarwin qtmacextras;
   
     enableParallelBuilding = true;
  
positive.code: 
  mkDerivation rec {
    pname = "nheko";
    version = "0.6.4";
  
    src = fetchFromGitHub {
      owner = "Nheko-Reborn";
      repo = "nheko";
      rev = "v${version}";
      sha256 = "19dkc98l1q4070v6mli4ybqn0ip0za607w39hjf0x8rqdxq45iwm";
    };
  
    # If, on Darwin, you encounter the error
  
negative.code: , qtmacextras
  , qtmultimedia
  , qttools
  , qtquickcontrols2
  , qtgraphicaleffects
  , mtxclient
  , boost17x
  , spdlog
  , olm
  , pkgconfig
  