To install sheepshaver-gui, run the following command in macOS terminal (Applications->Utilities->Terminal)
sudo port install sheepshaver-gui
To see what files were installed by sheepshaver-gui, run:
port contents sheepshaver-gui
To later upgrade sheepshaver-gui, run:
sudo port selfupdate && sudo port upgrade sheepshaver-gui
Reporting an issue on MacPorts Trac
The MacPorts Project uses a system called Trac to file tickets to report bugs and enhancement requests.
Though anyone may search Trac for tickets, you must have a GitHub account in order to login to Trac to create tickets.