anchor.diff:    parquet-testing = fetchFromGitHub {
       owner = "apache";
       repo = "parquet-testing";
  -    rev = "8991d0b58d5a59925c87dd2a0bdb59a5a4a16bd4";
  -    sha256 = "00js5d1s98y3ianrvh1ggrd157yfmia4g55jx9xmfcz4a8mcbawx";
  -  };
  -
  -  # Enable non-bundled uriparser
  -  # Introduced in https://github.com/apache/arrow/pull/4092
  -  Finduriparser_cmake = fetchurl {
  -    url = https://raw.githubusercontent.com/apache/arrow/af4f52961209a5f1b43a19483536285c957e3bed/cpp/cmake_modules/Finduriparser.cmake;
  -    sha256 = "1cylrw00n2nkc2c49xk9j3rrza351rpravxgpw047vimcw0sk93s";
  +    rev = "a277dc4e55ded3e3ea27dab1e4faf98c112442df";
  +    sha256 = "1yh5a8l4ship36hwmgmp2kl72s5ac9r8ly1qcs650xv2g9q7yhnq";
     };
   in
   
   stdenv.mkDerivation rec {
     name = "arrow-cpp-${version}";
  -  version = "0.13.0";
  +  version = "0.14.1";
   
     src = fetchurl {
       url = "mirror://apache/arrow/arrow-${version}/apache-arrow-${version}.tar.gz";
  -    sha256 = "06irh5zx6lc7jjf6hpz1vzk0pvbdx08lcirc8cp8ksb8j7fpfamc";
  +    sha256 = "0a0xrsbr7dd1yp34yw82jw7psfkfvm935jhd5mam32vrsjvdsj4r";
     };
   
     sourceRoot = "apache-arrow-${version}/cpp";
  +
  +  ARROW_JEMALLOC_URL = fetchurl {
  +    # From
  +    # ./cpp/cmake_modules/ThirdpartyToolchain.cmake
  +    # ./cpp/thirdparty/versions.txt
  +    url = "https://github.com/jemalloc/jemalloc/releases/download/5.2.0/jemalloc-5.2.0.tar.bz2";
  +    sha256 = "1d73a5c5qdrwck0fa5pxz0myizaf3s9alsvhiqwrjahdlr29zgkl";
  +  };
   
     patches = [
       # patch to fix python-test
  
positive.code:   PARQUET_TEST_DATA = if doInstallCheck then "${parquet-testing}/data" else null;
    installCheckInputs = [ perl which ];
    installCheckPhase = (stdenv.lib.optionalString stdenv.isDarwin ''
      for f in release/*-test; do
        install_name_tool -add_rpath "$out"/lib  "$f"
      done
    '') + ''
  
negative.code: 
    preConfigure = ''
      substituteInPlace cmake_modules/FindLz4.cmake --replace CMAKE_STATIC_LIBRARY CMAKE_SHARED_LIBRARY
  
      patchShebangs build-support/
  
  