anchor.diff:        cmake ^
         git ^
         boost-cpp ^
  -      snappy zlib brotli gflags lz4-c zstd -c conda-forge
  +      snappy zlib brotli gflags lz4-c zstd -c conda-forge || exit /B
   
   set GENERATOR=Visual Studio 14 2015 Win64
   set CONFIGURATION=release
  
positive.code: @rem script execution
  call conda create -p %_VERIFICATION_CONDA_ENV% -f -q -y python=%PYTHON% || exit /B
  
  call activate %_VERIFICATION_CONDA_ENV%
  
  call conda install -y ^
        six pytest setuptools numpy pandas cython ^
  
negative.code: set INSTALL_DIR=%_VERIFICATION_DIR%\install
  
  @rem Requires GNU Wget for Windows
  wget --no-check-certificate -O %_TARBALL% %_DIST_URL%/apache-arrow-%1-rc%2/%_TARBALL% || exit /B
  
  tar xf %_TARBALL% -C %_VERIFICATION_DIR_UNIX%
  
  set PYTHON=3.6
  
  