pyvenv-3.4 returned non-zero exit status 1

You are missing the venv lib for python 3.4, just run:

$ apt-get install python3.4-dev python3.4-venv

And then create your virtualenv

python3.4 -m venv myVenv

I got a solution installing python-virtualenv

sudo apt-get install python-virtualenv

and using

virtualenv --python=/usr/bin/python3.4 venv

Here is an O/S agnostic solution:

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. \(◠﹏◠)/