Python 3.10 on Ubuntu 20 on Windows 11

Python 3.10 on Ubuntu 20 on Windows 11.md

A guide on how to install Python 10 on WSL2 under Windows 10 / 11.

Install pyenv

pyenv is a tool that allows switching the global Python version, or choosing a specific version per project.

sudo apt update --yes
sudo apt install --yes build-essential curl git libbz2-dev liblzma-dev libffi-dev libncurses5-dev libncursesw5-dev libreadline-dev libssl-dev libsqlite3-dev llvm make python3-openssl tk-dev wget xz-utils zlib1g-dev
curl https://pyenv.run | bash
cat <<EOF >> $HOME/.bashrc

# configure pyenv
export PATH="\$PATH:\$HOME/.pyenv/bin"
eval "\$(pyenv init --path)"
eval "\$(pyenv init -)"
eval "\$(pyenv virtualenv-init -)"
EOF
exec $SHELL

Use pyenv to set a Python version globally

pyenv install 3.10.1
pyenv global 3.10.1

User pyenv to set a Python version to the current directory

pyenv install 3.10.1
pyenv local 3.10.1

Check

python --version
# Python 3.10.1
pip --version
# pip 21.2.4 from /home/carlos/.pyenv/versions/3.10.1/lib/python3.10/site-packages/pip (python 3.10)

Why?

1. focal/main/ $ARCH python3 still uses Python 3.8.
2. ppa:deadsnakes/ppa has weird issues with pip and paths.
3. Nobody got time for compiling Python from source.