Double Shot #1613

Upgrading to Ruby on Rails 5.0 from Rails 4.2 – application use case - One developer's experience. Looks to me fairly representative of the pain involved in a Rails version upgrade.
Bioruby - Open source bioinformatics library for Ruby.
Switching from rbenv to postmodern’s ruby-install and chruby - Changing tools for managing multiple ruby versions on a single dev box.