anchor.diff:  
     preConfigure = ''
       patchShebangs build-support/
  +    substituteInPlace "src/arrow/vendored/datetime/tz.cpp" \
  +      --replace "/usr/share/zoneinfo" "${tzdata}/share/zoneinfo"
     '';
   
     cmakeFlags = [
  
positive.code:     "-DCMAKE_INSTALL_RPATH=@loader_path/../lib" # needed for tools executables
    ] ++ lib.optional (!stdenv.isx86_64) "-DARROW_USE_SIMD=OFF";
  
    ARROW_XSIMD_URL = xsimd.src;
  
    doInstallCheck = true;
    ARROW_TEST_DATA =
  
negative.code: { stdenv, lib, fetchurl, fetchFromGitHub, fixDarwinDylibNames
  , autoconf, boost, brotli, cmake, flatbuffers, gflags, glog, gtest, lz4
  , perl, python3, rapidjson, re2, snappy, thrift, tzdata , utf8proc, which
  , zlib, zstd
  , enableShared ? !stdenv.hostPlatform.isStatic
  }:
  