Issue
I have created a virtualenv using the --no-site-packages option and installed lots of libraries. Now I would like to revert the --no-site-packages option and use also the global packages.
Can I do that without recreating the virtualenv?
More precisely:
I wonder what exactly happens when creating a virtualenv using the --no-site-packages option as opposed to not using that option.
If I know what happens then I can figure out how to undo it.
Solution
Try removing (or renaming) the file no-global-site-packages.txt in your Lib folder under your virtual environment.
Where venv is the name of your virtual environment, and python3.4 corresponds to whichever version of python involved, for example:
$ rm venv/lib/python3.4/no-global-site-packages.txt
And if you change your mind and want to put it back:
$ touch venv/lib/python3.4/no-global-site-packages.txt
Note: If you don't see the above file, then you have a newer version of virtualenv. You'll want to follow this answer instead
Answered By - ars