Installing byobu by macports;
$ mkdir -p /tmp/ports/devel/byobu
$ cd /tmp/ports/devel/byobu/
$ curl -o Portfile 'https://trac.macports.org/raw-attachment/ticket/30238/Portfile'
Add the line below to /opt/local/etc/macports/sources.conf (before the rsync:// line)
file:///tmp/ports