To install felix, run the following command in macOS terminal (Applications->Utilities->Terminal)
sudo port install felix
To see what files were installed by felix, run:
port contents felix
To later upgrade felix, run:
sudo port selfupdate && sudo port upgrade felix
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.