emacs powershell versus powershell-mode [closed]
Essentially, both of these are incomplete in some aspects, and both are apparently unmaintained.
Instead, use powershell.el. It is on MELPA, available for installation with M-x package-install RET powershell.
Enter the default shell (via M-x shell) and then type "powershell" at the command prompt. You're now running PowerShell inside cmd.exe inside EMACS. #workaround
Is there anything specific you want to use PowerShell for that you can't do in eshell?