|  | @@ -91,6 +91,9 @@ class BuildTaggedExt(setuptools.Command):
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				|  |  |  
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				|  |  |  
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				|  |  |  def update_setup_arguments(setup_arguments):
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				|  |  | +  if not USE_PRECOMPILED_BINARIES:
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				|  |  | +    sys.stderr.write('not using precompiled extension')
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				|  |  | +    return
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				|  |  |    url = '{}/{}.so'.format(BINARIES_REPOSITORY, _tagged_ext_name('cygrpc'))
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				|  |  |    target_path = os.path.join(PYTHON_STEM, 'grpc/_cython/cygrpc.so')
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				|  |  |    try:
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