anchor.diff:    nativeBuildInputs = [ cmake pkgconfig ];
   
     buildInputs = [
  -    mtxclient olm boost lmdb spdlog
  +    mtxclient olm boost lmdb spdlog cmark
       qt5.qtbase qt5.qtmultimedia qt5.qttools
     ] ++ lib.optional stdenv.isDarwin qtmacextras;
   
  
positive.code: in
  stdenv.mkDerivation rec {
    name = "nheko-${version}";
    version = "0.5.5";
  
    src = fetchFromGitHub {
      owner = "mujx";
      repo = "nheko";
      rev = "v${version}";
      sha256 = "0k5gmfwmisfavliyz0nfsmwy317ps8a4r3l1d831giqp9pvqvi0i";
    };
  
    # If, on Darwin, you encounter the error
  
negative.code: { lib, stdenv, fetchFromGitHub, fetchurl
  , cmake, cmark, lmdb, qt5, qtmacextras, mtxclient
  , boost, spdlog, olm, pkgconfig
  }:
  
  