Installing anaconda with pyenv, unable to configure virtual environment

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Personal recommendation: Don’t use pyenv to install Anaconda or Miniconda.

Both pyenv and conda are able to manage different python environments. The anaconda installed by pyenv should only serves as a Python interpreter. Python environment creation from anaconda installed by pyenv is still handled by pyenv virtualenv but not conda env create.

I’ve been using these two tools together. It turns out the best solution is to install conda, pyenv separately, and manage their virtual environments separately as well.

  1. alway initialize pyenv
  2. only expose command conda but don’t activate any environment

Detail

Install pyenv.

Install Anaconda or Miniconda normally, NOT by pyenv install.

Make sure the pyenv and conda commands are available in an interactive shell.

Initialize pyenv by putting following content into shell init file (.bashrc for Bash, .zshrc for ZSH).

# Put the content into ~/.bashrc or ~/.bash_profile for Bash,
# .zshrc for ZSH

# you may need to add dir of command `pyenv` into PATH,
# if command pyenv is not available yet

if command -v pyenv &>/dev/null; then
    eval "$(pyenv init -)"
fi
if command -v pyenv-virtualenv &>/dev/null; then
    eval "$(pyenv virtualenv-init -)"
fi

Expose command conda but don’t activate any environment, even the base environment. Execute the following commands in your shell.

# Run the content in the shell

# init conda, the following command write scripts into your shell init file automatically
conda init

# disable init of env "base"
conda config --set auto_activate_base false

Note: After this setup, the default python is the one set by pyenv global. Use pyenv and conda to manage environments separately.

Examples of managing virtual environments.

# virtual environments from pyenv
pyenv install 3.6.9
pyenv virtualenv 3.6.9 new-env
pyenv activate new-env
pyenv deactive
# You can also use `pyenv local`


# virtual environments from conda
conda env create new-env python=3.6
conda env list
conda activate new-env
conda deactivate

Default env location for pyenv is ~/.pyenv/versions.

Default env location for conda, check output from conda info.

References

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