AnnotateGemfile

This tool will hit the API at Rubygems and get a description for each gem listed in your project's Gemfile, and add that description as a comment above that gem.

For example, it will turn this Gemfile:

source 'https://rubygems.org'

gem 'rails'
gem 'devise'
gem 'marco-polo'

Into this Gemfile (saved as Gemfile.annotated):

source 'https://rubygems.org'

# Ruby on Rails is a full-stack web framework optimized for programmer happiness
# and sustainable productivity. It encourages beautiful code by favoring
# convention over configuration. (http://github.com/rails/rails)
gem 'rails', '~> 3.2.22'


# Flexible authentication solution for Rails with Warden
# (http://github.com/plataformatec/devise)
gem 'devise', '~> 2.2' # upgrade to 3.x too complicated

# MarcoPolo shows your app name and environment in your console prompt so you
# don't accidentally break production
gem 'marco-polo'

First install the gem:

$ gem install annotate_gemfile

Inside a Ruby project directory with a Gemfile, execute:

$ annotate-gemfile

After checking out the repo, run bin/setup to install dependencies. Then, run rake spec to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.

Bug reports and pull requests are welcome on GitHub at https://github.com/jakeonrails/annotate_gemfile.