I use powershell as my primary shell, but pipenv shell starts a CMD prompt.

Describe you environment

1. OS Type: Windows 7
2. Python version: $ python -V 3.6.2
3. Pipenv version: $ pipenv --version 8.2.6

Expected result

I'd expect the shell that was started to be the same as my current shell (i.e., powershell)

Actual result

The shell is always a CMD shell, as far as I can see there is no way to change this.

Steps to replicate

pipenv shell. It's possible to work around this by using pipenv run powershell but this doesn't set $env:VIRTUAL_ENV (which I believe is a known issue).