[Question] How to work with `direnv`?

[failable]

Currently Elpy can not work with direnv (https://github.com/wbolster/emacs-direnv / https://github.com/purcell/envrc), is there a way to make Elpy recognize VIRTUAL_ENV set by direnv? Thanks.

[skullgoblet1089]

After you allow direnv in the project directory, the virtualenv will automatically become activated when you enter it. You can tell elpy to use the currently activated virtual environment with:

(setq elpy-rpc-virtualenv-path 'current)

You must launch emacs from somewhere in the direnv enabled root for this solution to work. Otherwise, consider setting elpy-rpc-virtualenv-path dynamically with the options that it supports: https://elpy.readthedocs.io/en/latest/concepts.html#option-elpy-rpc-virtualenv-path

[skullgoblet1089]

Here is an example of how you could start to connect direnv with elpy dynamically via virtualenvwrapper

• Format the .envrc file layout to use $WORKON_HOME: https://github.com/direnv/direnv/wiki/Python#virtualenvwrapper
• Enter the directory, allow direnv, activate or workon the virtualenv and install project dependencies etc.
• Open emacs from wherever you like, and interactively call pyvenv-workon from elpy mode to configure elpy to use the project virtualenv you setup previously as managed by virtualenvwrapper

Reference

• https://virtualenvwrapper.readthedocs.io/en/latest/