virtualenv command line option to skip default-packages

[mikenerone]

Not sure this is doable under pyenv's plugin structure, but it would be helpful to have an option along the lines of --skip-default-packages added to pyenv virtualenv. 90% of the time, I want some default dev tools installed, so I'd like to use pyenv-default-packages for that, but sometimes I have other needs, such as a temporary virtualenv purely to collect my actual app dependencies for updating my requirements file.

[neverfox]

I would like to see this too, but at the moment I just run pip freeze | xargs pip uninstall -y in the new environment to restore it to basics.