You aren't, I do it all the time. But it does get slightly tedious to type out the whole path. (when switching virtualenvs frequently, unlike your use case)
What I use that is analogous to your single virtualenv sourced at shell startup, is pip install --user. I tend to use that for command line tools like style checkers.
What I use that is analogous to your single virtualenv sourced at shell startup, is pip install --user. I tend to use that for command line tools like style checkers.