Understading Asdf Direnv

Table of Contents

TL;DR #

Because I’m using tmux, shell gets ran every time.

config.fish is loaded first

asdf-direnv loads the .envrc

.envrc contains use asdf and then executes it

$PATH is updated because of use asdf

The problem is that if I activate a python virtualenv, it gets added to the $PATH


# virtualfish auto_activation enabled
virtualenv/path/to/python
asdf/direnv/loaded/bins/golang
asdf/direnv/loaded/bins/python

If I open a split pane via tmux, the $PATH will look like

# virtualfish auto_activation enabled
asdf/direnv/loaded/bins/golang
asdf/direnv/loaded/bins/python
virtualenv/path/to/python

virtualenv path gets placed at the bottom

Fix is to add this to ~/.config/direnv/direnvrc

add_venv_to_path() {
    if [[ ! -z "${TMUX}" && ! -z "${VIRTUAL_ENV}" ]]; then
        PATH_add "$VIRTUAL_ENV"/bin
    fi
}

and then inside your ~/.envrc

use asdf
add_venv_to_path

This has caused me a lot of headache and I probably wouldn’t be able to get back the lost time I spent figuring out how to fix this.

References