I did merge Bundler into Ruby core repository and shipped bundler as standard library on Ruby 2.6. It helps to preparation of the fresh Ruby install and easy to use gem and bundle commands.
In background, we have a lot of issues until done to merge bundler into ruby core. This presentation show the some of issues of it works that are test suite, rubygems integration and library ecosystem like Heroku. You can understand the internal of library management by rubygems and bundler.
Finally, I'm going to show the integration plan of RubyGems and Bundler and the part of its implements. Also I will show the issues of the current status. You can resolve them after my talk.
RubyKaigi 2019 https://rubykaigi.org/2019/presentations/hsbt.html#apr20
RubyKaigi 2019