Comment 2 for bug 1518023

I've confirmed that the shebang for /usr/bin/pip3 is /usr/bin/python3.5 where it should be /usr/bin/python3 and that affects where pip3 will install things by default. I should mention that in the face of multiple supported versions of Python 3, "pip3" is ambiguous anyway, and you might want to use `python3.4 -m pip install` to be explicit. Still, pip3 by default should install in the default Python 3.

(Aside: note that upstream pip is trying to break the link between the shebang and where things get installed. That won't help for Wily though. Also, this isn't Xubuntu specific).