chef

https://github.com/opscode/chef

Ruby

A systems integration framework, built to bring the benefits of configuration management to your entire infrastructure.

Chef::Cookbook::Metadata#validate_chef_version!

Validates that the Chef::VERSION of the running chef-client matches one of the
configured chef_version statements in this cookbooks metadata.

Source | Google | Stack overflow

Edit

git clone [email protected]:opscode/chef.git
cd chef
open lib/chef/cookbook/metadata.rb

Contribute

# Make a new branch
git checkout -b -your-name--update-docs-Chef--Cookbook--Metadata-validate_chef_version--for-pr

# Commit to git
git add lib/chef/cookbook/metadata.rbgit commit -m "better docs for Chef::Cookbook::Metadata#validate_chef_version!"

# Open pull request
gem install hub # on a mac you can `brew install hub`
hub fork
git push <your name> -your-name--update-docs-Chef--Cookbook--Metadata-validate_chef_version--for-pr
hub pull-request

# Celebrate!