License::Compatibility

Check compatibility between different SPDX licenses, used by Libraries.io for checking dependency license compatibility.

n.b. I am not a lawyer and any results should be confirmed with a copyright lawyer if it's important to you.

Installation

Add this line to your application's Gemfile:

gem 'license-compatibility'

And then execute:

$ bundle

Or install it yourself as:

$ gem install license-compatibility

Usage

On the command-line:

license-compatibility [-h] [-v] [-l] [-r file] [args]

Arguments are a list of licenses or a list of package:license couples. Examples:

license-compatibility MIT GPL-3.0 Unlicense
license-compatibility my_package:ISC other_pkg:BSD-2-Clause

Mixing the two formats is not allowed. Additional args after a --read option are accepted.

Options:

• -l, --list: Print the list of supported licenses.
• -r, --read FILE: Read arguments from file.
• -v, --version: Show the program version.
• -h, --help: Print help message.

In your code:

License::Compatibility.forward_compatibility('MIT', 'GPL-3.0') #=> true

Development

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.

Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/librariesio/license-compatibility. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the Contributor Covenant code of conduct.

License

The gem is available as open source under the terms of the MIT License.