My Direnv setup for Python & JS isolated development

.bashrc

# You can put these in your .bashrc (or .profile or other shell setup) to setup direnv, pyenv, nvm.

# pyenv setup hook (install it first)
export PYENV_ROOT="$HOME/.pyenv"
[[ -d $PYENV_ROOT/bin ]] && export PATH="$PYENV_ROOT/bin:$PATH"
eval "$(pyenv init -)"
eval "$(pyenv virtualenv-init -)"

# nvm setup hook (install it first)
export NVM_DIR="$HOME/.nvm"
[ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh"  # This loads nvm
[ -s "$NVM_DIR/bash_completion" ] && \. "$NVM_DIR/bash_completion"  # This loads nvm bash_completion

# direnv setup hook (install it first)
eval "$(direnv hook bash -)"

.direnvrc

# Put this in ~/.direnvrc to enable nodejs versions once nvm is installed
use_nodejs() {
    NODE_VERSION="$1"

    type nvm >/dev/null 2>&1 || . ~/.nvm/nvm.sh
    nvm use "$NODE_VERSION"
}

.envrc

# Example of a .envrc file you can put in a project directory
# Once direnv is set up this file will get run when you change to the directory it's in

# Print something
echo "Hello world from this folder."

# Set an environment variable
export SOME_API_KEY=424242424242

# Source some other script
source mysecrets

# Use a specific Python version with pyenv
layout pyenv 3.6.9

# Use a specific node version (installed with nvm)
use nodejs 22