Lapidary is a RubyGem project support tool.

Lapidary mainly supports:

  • RubyGem management and release based on Jeweler
  • RubyGem scaffold generation based on Jeweler
  • Behaviour driven development with RSpec
  • Continuous integration with Jenkins by providing:

Supported Ruby versions and implementations

Lapidary should work identically on:

  • Ruby 1.9.3
  • Ruby 1.9.2
  • Ruby 1.8.7


You can install lapidary by gem. gem install lapidary


scaffold new RubyGem project

$ lapidary mygem

run rspec

$ rake spec

This task also measure the code coverage in Ruby 1.9.2/1.9.3.

measure the code coverage(Ruby 1.8.7)

$ rake spec:rcov

output CI reports

$ rake ci:setup:rspec spec

set gem version

$ rake version:write MAJOR=0 MINOR=1 PATCH=0

increment major version

$ rake version:bump:major

increment minor version

$ rake version:bump:minor

increment patch version

$ rake version:bump:patch

build gem

$ rake build

create document using YARD

$ rake yard

create document using RDoc

$ rake rdoc

release gem to

$ rake release


Rake tasks are based on Jeweler.

You can get more information from

Contributing to Lapidary

  • Check out the latest master to make sure the feature hasn't been implemented or the bug hasn't been fixed yet.
  • Check out the issue tracker to make sure someone already hasn't requested it and/or contributed it.
  • Fork the project.
  • Start a feature/bugfix branch.
  • Commit and push until you are happy with your contribution.
  • Make sure to add tests for it. This is important so I don't break it in a future version unintentionally.
  • Please try not to mess with the Rakefile, version, or history. If you want to have your own version, or is otherwise necessary, that is fine, but please isolate to its own commit so I can cherry-pick around it.

Copyright (c) 2012 Kenji Hara. See LICENSE.txt for further details.