Recently I upgraded to Mojave on my Macbook Pro (late 2015). I then decided it was also time to upgrade Homebrew. I needed to update postgres, so thought I would update everything else. postgres was a success. Read more in my posts entitled Upgrading PostgreSQL from version 10.4 to 11.1 via Homebrew (OSX) and Changing your (Homebrew) PostgreSQL configuration from trust to md5. Unbeknownst to me until today, my Ruby system ... Continue Reading