anchor.diff:    ];
   
     nativeBuildInputs = [ cmake ];
  -  buildInputs = [ curl ];
   
     cmakeFlags = [
       "-DBUILD_TZ_LIB=true"
  
positive.code:     description = "A date and time library based on the C++11/14/17 <chrono> header";
      homepage = "https://github.com/HowardHinnant/date";
      platforms = platforms.linux;
      maintainers = with maintainers; [ ];
    };
  }
  
negative.code: { lib, stdenv, fetchFromGitHub, cmake, tzdata, fetchpatch, substituteAll }:
  
  stdenv.mkDerivation rec {
    pname = "howard-hinnant-date";
    version = "3.0.1";
  
    src = fetchFromGitHub {
      owner = "HowardHinnant";
      repo = "date";
      rev = "v${version}";
      sha256 = "1qk7pgnk0bpinja28104qha6f7r1xwh5dy3gra7vjkqwl0jdwa35";
    };
  
    patches = [
      # Add pkg-config file
      # https://github.com/HowardHinnant/date/pull/538
      (fetchpatch {
        name = "output-date-pc-for-pkg-config.patch";
        url = "https://git.alpinelinux.org/aports/plain/community/date/538-output-date-pc-for-pkg-config.patch?id=11f6b4d4206b0648182e7b41cd57dcc9ccea0728";
        sha256 = "1ma0586jsd89jgwbmd2qlvlc8pshs1pc4zk5drgxi3qvp8ai1154";
      })
      # Without this patch, this library will drop a `tzdata` directory into
      # `~/Downloads` if it cannot find `/usr/share/zoneinfo`. Make the path it
  