Copyright and license policy¶
All released source code should by default be licensed under MIT License. Exceptions may be made to this policy on a case-by-case basis. Reasons for exceptions could be (but not limited to):
Source code already released under another permissive license (e.g. Apache v2, BSD) or LGPL.
In all cases, source code should not be released under a copyleft license like GPL or AGPL.
Copyright statements must be included in:
LICENSEfile in the root of the repository.
Headers of all source code files.
Each copyright holder must have their own copyright statement:
Copyright (C) 2015-2018 CERN Copyright (C) 2017 TIND
Each copyright holder must be a legal entity.
Copyright is tracked for non-trivial contributions (i.e. creative work). By default we consider anything above 15 lines for a non-trivial contribution. Examples for which we do not track copyright is e.g. fixing a typo or tiny bug fixes.
Maintainers are responsible for asking each contributor who is the copyright holder of a given contribution (often, it’s the employer who holds the copyright).
Attribution is not tracked via copyright, but via the
Legal entity: A legal entity can be human (physical persons) or non-human (juridical persons, e.g. corporations). A legal entity has privileges and obligations such as being able to enter into contracts, to sue or be sued. Thus, e.g. CERN is a legal entity but e.g. ATLAS, CMS and Invenio Collaboration are not considered legal entities by the law.
Contribtions only via GitHub
All contributions must be opened via pull requests on GitHub.
“Whenever you make a contribution to a repository containing notice of a license, you license your contribution under the same terms, and you agree that you have the right to license your contribution under those terms.”
This method avoid introducing either a Contributor License Agreement (CLAs) or a Developer Certificate of Origin.