Ruby have many libraries named standard library, extension and default-gems, bundled-gems. These are some differences under the bundler and rails application.
default-gems and bundled-gems are introduced to resolve dependency problem and development ecosystem around the ruby core. We have the plan to promote default/bundled gems from standard libraries. It says “Gemification” projects.
What Gemification changes in Ruby ecosystem? In this presentation, I will explain details of Gemification and future things of Ruby language.