|  | @@ -29,6 +29,7 @@ python3.5 -m pip install -U cython setuptools==44.1.1 wheel --user
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				|  |  |  python3.6 -m pip install -U cython setuptools==44.1.1 wheel --user
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				|  |  |  python3.7 -m pip install -U cython setuptools==44.1.1 wheel --user
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				|  |  |  python3.8 -m pip install -U cython setuptools==44.1.1 wheel --user
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				|  |  | +python3.9 -m pip install -U cython setuptools==44.1.1 wheel --user
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				|  |  |  
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				|  |  |  # needed to build ruby artifacts
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				|  |  |  time bash tools/distrib/build_ruby_environment_macos.sh
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