gnu: Add ruby-rack. * gnu/packages/ruby.scm (ruby-rack): New variable.
gnu: Add ruby-byebug. * gnu/packages/ruby.scm (ruby-byebug): New variable.
gnu: Add ruby-pg. * gnu/packages/ruby.scm (ruby-pg): New variable.
Update copyright information in (gnu packages ruby).
gnu: Add ruby-ox. * gnu/packages/ruby.scm (ruby-ox): New variable.
gnu: Add ruby-activesupport. * gnu/packages/ruby.scm (ruby-activesupport): New variable.
gnu: Add ruby-json. * gnu/packages/ruby.scm (ruby-json): New variable.
gnu: Add ruby-tzinfo. * gnu/packages/ruby.scm (ruby-tzinfo): New variable.
gnu: Add ruby-thread-safe. * gnu/packages/ruby.scm (ruby-thread-safe): New variable.
gnu: Add ruby-pry. * gnu/packages/ruby.scm (ruby-pry): New variable.
gnu: Add ruby-slop-3. * gnu/packages/ruby.scm (ruby-slop-3): New variable.
gnu: Add ruby-coderay. * gnu/packages/ruby.scm (ruby-coderay): New variable.
gnu: Add ruby-method-source. * gnu/packages/ruby.scm (ruby-method-source): New variable.
gnu: Add ruby-nokogiri. Co-Authored-By: Pjotr Prins <pjotr.public01@thebird.nl> * gnu/packages/ruby.scm (ruby-nokogiri): New variable.
gnu: Add ruby-mini-portile. * gnu/packages/ruby.scm (ruby-mini-portile): New variable.
gnu: Add ruby-minitar. * gnu/packages/ruby.scm (ruby-minitar): New variable.
gnu: bundler: Update to 1.10.6. * gnu/packages/ruby.scm (bundler): Update to 1.10.6.
gnu: Add ruby-thor. * gnu/packages/ruby.scm (ruby-thor): New variable.
gnu: Add ruby-xml-simple. * gnu/packages/ruby.scm (ruby-xml-simple): New variable.
gnu: Add ruby-orderedhash. * gnu/packages/ruby.scm (ruby-orderedhash): New variable.