Pyvenv Cannot Create Virtual Environment

Usually I use virtualenv for python2.x. After some bitter experience with unicode encoding/decoding clash, I decided to upgrade to 3.x, But I can't create a virtualenv using pyvenv

Solution 1:

Here's an approach that is fairly O/S agnostic...

Both the pyvenv and python commands themselves include a --without-pip option that enable you to work around this issue; without resorting to setuptool or other headaches. Taking note of my inline comments below, here's how to do it, and is very easy to understand:

user$ pyvenv --without-pip ./pyvenv.d          # Create virtual environment this way;
user$ python -m venv --without-pip ./pyvenv.d  # --OR-- this newer way. Both work.

user$ source ./pyvenv.d/bin/activate  # Now activate this new virtual environment.
(pyvenv.d) user$

# Within it, invoke this well-known script to manually install pip(1) into /pyvenv.d:
(pyvenv.d) user$ curl https://bootstrap.pypa.io/get-pip.py | python

(pyvenv.d) user$ deactivate           # Next, reactivate this virtual environment,
user$ source ./pyvenv.d/bin/activate  # which will now include the pip(1) command.
(pyvenv.d) user$

(pyvenv.d) user$ which pip            # Verify that pip(1) is indeed present.
/path/to/pyvenv.d/bin/pip

(pyvenv.d) user$ pip install --upgrade pip # And finally, upgrade pip(1) itself;
(pyvenv.d) user$                           # although it will likely be the
                                           # latest version. And that's it!

I hope this helps. \(◠﹏◠)/

Solution 2:

Why don't just directly use third-party virtualenv install by sudo pip3 install virtualenv, because you are already familiar with it when using python2