Slow `eval "$(pyenv virtualenv-init -)"`/ `pyenv activate` performance

[wyatt-wong]

I found that without adding eval "$(pyenv virtualenv-init -)" to .zshrc file, I could not use the following commands:

pyenv activate <name>
pyenv deactivate

The eval "$(pyenv virtualenv-init -)" is too slow to execute when I launch zsh, is there any alternatives?

[native-api]

#523

[wyatt-wong]

That doesn't resolved my issue. I still want to have other alternatives without using "$(pyenv virtualenv-init -)"

[wyatt-wong]

It would be sufficient to initialize pyenv virtualenv in the minimal level such that one can activate and deactivate the Python virtual environment using

pyenv activate <name>
pyenv deactivate

[vigo]

I have kinda similar but worst version of an issue... after some time, when i try to open a new terminal window or tab, whole macos crashes. this is the part from my bashrc:

if [[ -d "${HOME}/.pyenv" ]]; then
    export VIRTUAL_ENV_DISABLE_PROMPT=1
    export PYENV_ROOT="${HOME}/.pyenv"
    export PATH="${PYENV_ROOT}/bin:${PATH}"

    eval "$(pyenv init -)"
    eval "$(pyenv virtualenv-init -)"

    export PYENV_VIRTUALENVWRAPPER_PREFER_PYVENV="true"
    eval "$(pip --disable-pip-version-check completion --bash)"

    pyenv virtualenvwrapper_lazy
    virtualenvwrapper_lazy_load
fi

eval "$(pyenv virtualenv-init -)" part hangs forever and i tried with : PYENV_DEBUG=1 pyenv virtualenv-init -

i started to see:

fork: retry: Resource temporarily unavailable
forkpty: Resource temporarily unavailable Could not create a new process and open a pseudo-tty

and macos crashes... i restart and it works again but kind of a lottery, i happens in a random time.

[wyatt-wong]

I found the following commands can be used to activate and deactivate the virtual env:

source activate venv
source deactivate venv