During the last four years, until the early part of 2018, I worked on a MacBook. Sometime in the second quarter of last year, I shifted to a Windows 10 laptop. The transition has been quite smooth and delightful. There were two Rails applications that I had to write and maintain. The first application, let's call it webapp-1, was coded by me in 2016 using Ruby 2.3.1 p112 and Rails 4.2.6. The second application, hereafter referred to as webapp-2, is a new application that I had to write from scratch, so I chose the latest versions: Ruby 2.5.3, Rails 5.2.1. For both these applications, the database was MySQL, and I decided to install the latest version, i.e., 8 running on Windows. The MySQL installer tools make the installation and configuration very easy and I could bring up MySQL quickly. I started setting up the Rails environment for webapp-2 first. The installation program for windows that I downloaded was rubyinstaller-devkit-2.5.3-1-x64.exe. I ran it, selected MSYS2 ...