I am attempting to remove all of the installed \"pyobjc-framework\"-prefixed packages. I have tried the following:
% pip freeze | grep pyobjc-framework | xar
Your command should actually work if you add the -y | --yes flag to pip :-)
-y | --yes
-y, --yes Don't ask for confirmation of uninstall deletions.
Possibly:
% pip freeze | grep pyobjc-framework | xargs pip uninstall -y