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35 lines
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----------------------------
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Installing Python with pyenv
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----------------------------
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On distributions where Python 3.9 needs to be compiled from source, we recommend the use of pyenv.
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This simplifies the compilation process and has the added bonus of simplifying setting up Red in a
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virtual environment.
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.. prompt:: bash
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command -v pyenv && pyenv update || curl https://pyenv.run | bash
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**After this command, you may see a warning about 'pyenv' not being in the load path. Follow the
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instructions given to fix that, then close and reopen your shell.**
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Then run the following command:
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.. prompt:: bash
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CONFIGURE_OPTS=--enable-optimizations pyenv install 3.9.7 -v
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This may take a long time to complete, depending on your hardware. For some machines (such as
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Raspberry Pis and micro-tier VPSes), it may take over an hour; in this case, you may wish to remove
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the ``CONFIGURE_OPTS=--enable-optimizations`` part from the front of the command, which will
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drastically reduce the install time. However, be aware that this will make Python run about 10%
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slower.
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After that is finished, run:
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.. prompt:: bash
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pyenv global 3.9.7
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Pyenv is now installed and your system should be configured to run Python 3.9.
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