Python3.6-venv Hijacks Pip. What Is A Way To Prevent This?

I am chasing down an install failure. I have a fresh ubuntu xenial install. I have several different projects, each one involving dependencies requiring a different version of pyt

Solution 1:

Restore shebang line in /usr/local/bin/pip — make it #!/usr/bin/python2.

PS. Well, formally it's not a complete answer because the question is "How to prevent?" I don't know what program changed shebang line; but I doubt it was virtual environment.