We need --switch because:
"The --switch flag allows you to replace the charm with an entirely different one.
The new charm's URL and revision are inferred as they would be when running a
deploy command."
and can't use --path because
"--switch and --path are mutually exclusive."
We need --switch because:
"The --switch flag allows you to replace the charm with an entirely different one.
The new charm's URL and revision are inferred as they would be when running a
deploy command."
and can't use --path because
"--switch and --path are mutually exclusive."