Python 3 and Emulab software
Up til now, the deprecation of Python 2.7 has been an abstract problem to deal with "another day." Well that other day is closing in. In addition to it being removed from the FreeBSD ports tree on January 1st, as of this quarter's port set (2020 Q4) a lot of packages will not recognize or install 2.7 "flavors". I fought with this for awhile trying to make a new Emulab package set for either 11.4 or 12.1 (FreeBSD 11.3 is officially dead as of 9/30), but it is like swimming against the current and I am a lousy swimmer.