anchor.diff:  { lib, stdenv, fetchFromGitHub
   , autoreconfHook, pkg-config
  -, cunit, file
  +, cunit, file, ncurses
   , jemalloc, libev, nghttp3, quictls
   }:
   
  
positive.code:     sha256 = "sha256-uBmD26EYT8zxmHD5FuHCbEuTdWxer/3uhRp8PhUT87M=";
    };
  
    nativeBuildInputs = [ autoreconfHook pkg-config cunit file ];
    buildInputs = [ jemalloc libev nghttp3 quictls ];
  
    preConfigure = ''
      substituteInPlace ./configure --replace /usr/bin/file ${file}/bin/file
  
negative.code:   outputs = [ "out" "dev" ];
  
    doCheck = true;
    enableParallelBuilding = true;
  
    meta = with lib; {
      homepage = "https://github.com/ngtcp2/ngtcp2";
      description = "ngtcp2 project is an effort to implement QUIC protocol which is now being discussed in IETF QUICWG for its standardization.";
      license = licenses.mit;
      platforms = platforms.unix;
      maintainers = with maintainers; [ izorkin ];
    };
  }
  