Gemfile of dreams: the libraries we use to build Rails apps

From time immemorial, the Evil Martians team has worked on dozens of Ruby on Rails projects every year. Naturally, this process involves a lot of Ruby gems. Some reflect our desire to be cutting-edge and to use modern tools (or build our own!) Other gems are so flexible they’ve been used in most of our projects. Our development philosophies, programming habits, and soul are within this universe of Martian gems. So what would it look like if they were somehow able to converge into one gemfile—the ideal Martian Gemfile, the toolbox of the extraterrestrial Rails engineer?.