Setting up a napari development environment (M1 MacOS)

Getting pyenv

Set up pyenv on your M1 Mac.

brew install pyenv

Add the following to your .zshrc file:

export PYENV_ROOT="$HOME/.pyenv"
export PATH
eval "$(pyenv init --path)"

Restart your terminal.

To test that pyenv is installed, run:

pyenv --version

Getting miniforge3

In this section, we will install miniforge3, a minimal installer for conda.

pyenv install miniforge3

pyenv versions

pyenv local miniforge3

Playing with conda

conda

conda list

conda init

Create a conda environment

conda create -y -n napari-env -c conda-forge python=3.9

conda activate napari-env

python -m pip install "napari[all]"

The quotes are needed for zsh shell.

Add the dev tools

pip install -e ".[pyside,dev]"

pip install -e ".[dev]"

pre-commit install

Add the testing tools

python -m pip install -e ".[testing]"

Run the tests

CI=1 pytest

Next steps

1. Run IPython and test napari.
2. Make a change to the code and run the tests.
3. Run an example script.