The homebrew/gui tap is empty and deprecated
The homebrew/gui tap is empty and deprecated

Step 2 is now unnecessary. If you run that command, you get the following message from `brew`:

> Error: homebrew/gui was deprecated. This tap is now empty as all its formulae were migrated.

Everyone can now `brew install tarsnap-gui` directly.
Tarsnap/tarsnap-gui,Tarsnap/tarsnap-gui,Tarsnap/tarsnap-gui,Tarsnap/tarsnap-gui,Tarsnap/tarsnap-gui,shinnok/tarsnap-gui,shinnok/tarsnap-gui,shinnok/tarsnap-gui,shinnok/tarsnap-gui,shinnok/tarsnap-gui