HPR2333: VirtualenvWrapper for Fish Shell

Hacker Public Radio

In this episode, talk about how I created my own virtualenvwrapper-like interface using Fish Shell.

Fish Shell is "a smart and user-friendly command line shell for macOS, Linux, and the rest of the family. It excels in tab completion and ease of use, but virtualenvwrapper does not support it.

Virtualenvwrapper, like the name suggests, is a wrapper around python's virtualenv functionality, which allows you to use different versions of python packages in separate environments. To learn more, listen to BJB's show called A bit of background on virtualenvwrapper.

Functions and aliases in my fish config file:

# Set virtual directory root export set WORKON_HOME=$HOME/Envs # List virtual environments alias lsenvs="ls -m $WORKON_HOME | sed 's/\///g'" # Create python2 virtual environment function -d "Like virtualenvwrapper for python2" mkvirtualenv2 virtualenv -p python2 $WORKON_HOME/$argv; and source $WORKON_HOME/$argv/bin/activate.fish; and echo "Virtual environment created." end # Create python3 virtual environment function -d "Like virtualenvwrapper" mkvirtualenv virtualenv -p python3 $WORKON_HOME/$argv; and source $WORKON_HOME/$argv/bin/activate.fish; and echo "Virtual environment created." end # Source a virtual environment function workon source $WORKON_HOME/$argv/bin/activate.fish; and echo "Switch to virtual environment." end # Delete a virtual environment function -d "Like virtualenvwrapper" rmvirtualenv if test -n "$VIRTUAL_ENV" deactivate end rm -rf $WORKON_HOME/$argv; and echo "Virtual environment deleted." end