Summary: In general, after making a change to the Gemfile(5) , you should first try to run bundle install, which will guarantee that no other gem in the Gemfile(5) is impacted by the change. If that does not work, run bundle update(1).
Ok intéressant, gestion des gem, freeze, avec bundle
How to make --no-ri --no-rdoc the default for gem install?
.gemrc :
gem: --no-document