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How would I activate a specific virtual environment in my init file? I know how to activate it manually, but I don't like to do it every time I start emacs.

To activate it manually I used:

pyvenv-activate

Then a path needs to be specified and it works. So I tried the following in the init file:

(pyvenv-activate PATH_TO_VENV)

Unfortunately it tells me:

Invalid function: (quote pyvenv-activate)

I want to do this, because without activating the venv, elpy does not find it and thus doesn't find jedi etc.

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1 Answer 1

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Load pyvenv first and then activate env. Add this to your init file.

(require 'pyvenv)
(pyvenv-activate "~/.virtualenvs/exp/")

If you are using virtualenvwrapper, you can use pyvenv-workon 

(require 'pyvenv)
(pyvenv-workon "exp")

If you load elpy first, it will automatically load pyvenv. You don't need to do (require 'pyvenv).

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  • Does it load pyvenv twice, if I still add the require statement, or does it realize, that the dependency is already fulfilled? I tend to keep the require, just in case I move it around in my init file some day…
    – Zelphir Kaltstahl
    Commented Nov 14, 2015 at 10:36
  • 1
    require checks before loading features. So it should load only once.
    – Chillar Anand
    Commented Nov 14, 2015 at 11:29
  • How could I verify that pyvenv is successfully loaded venv?
    – alper
    Commented Jun 20, 2021 at 21:24

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