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SETUP_MINIFORGE.md

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Python Setup on Apple Silicon - Step by Step

See Terminal for details on arm64 and x86_64 terminal setup.

Install miniforge for arm64 and x86_64 architectures

Miniforge can be installed for both arm64 and x86_64 architectures. The following notes are adapted from this article: https://towardsdatascience.com/how-to-install-miniconda-x86-64-apple-m1-side-by-side-on-mac-book-m1-a476936bfaf0

Step 1 - arm64 architecture

Use a native terminal.

mkdir -p ~/tmp
cd ~/tmp
wget https://github.com/conda-forge/miniforge/releases/latest/download/Miniforge3-MacOSX-arm64.sh
bash Miniforge3-MacOSX-arm64.sh -p /opt/miniforge3 -f -b

If a specific version is required, find the required assets from the miniforge releases, e.g.

mkdir -p ~/tmp
cd ~/tmp
wget https://github.com/conda-forge/miniforge/releases/download/4.14.0-2/Miniforge3-4.14.0-2-MacOSX-arm64.sh
sudo /bin/bash Miniforge3-4.14.0-2-MacOSX-arm64.sh -p /opt/miniforge3 -f -b
sudo chown -R "$USER":staff /opt/miniforge3

A similar approach works for mambaforge variants of conda. For example:

mkdir -p ~/tmp
cd ~/tmp
wget https://github.com/conda-forge/miniforge/releases/latest/download/Mambaforge-Darwin-arm64.sh
sudo /bin/bash Mambaforge-Darwin-arm64.sh -p /opt/mambaforge -f -b
sudo chown -R "$USER":staff /opt/mambaforge

Step 2 - x86_64 architecture

Use a rosetta terminal with the x86_64 architecture.

mkdir -p ~/tmp
cd ~/tmp
wget https://github.com/conda-forge/miniforge/releases/latest/download/Miniforge3-MacOSX-x86_64.sh
sudo /bin/bash Miniforge3-MacOSX-x86_64.sh -p /usr/local/miniforge3 -f -b
sudo chown -R "$USER":staff /usr/local/miniforge3

A similar approach works for mambaforge variants of conda. For example:

mkdir -p ~/tmp
cd ~/tmp
wget https://github.com/conda-forge/miniforge/releases/latest/download/Mambaforge-Darwin-x86_64.sh
sudo /bin/bash Mambaforge-Darwin-x86_64.sh -p /usr/local/mambaforge -f -b
sudo chown -R "$USER":staff /usr/local/mambaforge

Step 3 - Configure ZSH for multiple installations of miniforge

In anticipation of additional installations for intel-compatible miniforge (see below), the ZSH init script can be setup to configure conda with arch specific paths.

# ~/.zshrc file

if [ "$(uname -m)" = "arm64" ]; then
    eval "$(/opt/miniforge3/bin/conda shell.zsh hook)"
fi
if [ "$(uname -m)" = "x86_64" ]; then
    eval "$(/usr/local/miniforge3/bin/conda shell.zsh hook)"
fi

Similar configuration works for mambaforge, i.e.

# ~/.zshrc file

if [ "$(uname -m)" = "arm64" ]; then
    eval "$(/opt/mambaforge/bin/conda shell.zsh hook)"
fi
if [ "$(uname -m)" = "x86_64" ]; then
    eval "$(/usr/local/mambaforge/bin/conda shell.zsh hook)"
fi

Step 4 - Disable the base activation

It's a good idea to disable the automatic activation of the conda base environment when any shell starts.

conda config --set auto_activate_base false