Re: [jgrapht-users] Licensing: Dual license JGraphT under EPL and LGPL

[John S. <js...@gm...>]

Hey everyone, Oliver has also posted this information on a wiki page:

https://github.com/jgrapht/jgrapht/wiki/Relicensing

If you have opinions on this effort, let's discuss them here on the
mailing list while we're in the process of contacting contributors,
which is going to take a while.

Thanks!
JVS

On Sat, May 25, 2013 at 1:26 AM, Oliver Kopp <ko...@gm...> wrote:
> Dear JGraphT users and developers,
>
> Currently, the JGraphT project is released under the LGPL. The Eclipse
> Software Foundation, however, decided to disallow LGPL libraries in their
> projects (http://mmilinkov.wordpress.com/2009/04/30/lgpl-pain/). A similar
> issue applies for projects under the umbrella of the Apache Software
> Foundation (http://www.apache.org/legal/3party.html).
>
> As a reciprocal license, LGPL requires anyone redistributing JGraphT to
> publish any source code changes they make. As the Eclipse Public License
> (EPL) also requires this, and is compatible with the regulations of the
> Apache Software Foundation ("Category B: Reciprocal Licenses" in
> http://www.apache.org/legal/3party.html), it seems like a good choice for
> resolving the incompatibilities. Hence we've started this initiative to dual
> license JGraphT under LGPL and EPL. This has been successfully done for the
> Logback project (http://logback.qos.ch/license.html) and the qooxdoo project
> (http://qooxdoo.org/license).
>
> It is not proposed to relicense JGraphT under BSD, MIT, or Apache 2.0
> license as it is acknowledged that the original authors may want
> modifications of their code being published, and these kind of licenses do
> not enforce that.
>
> All in all, we propose to relicense JGraphT under the following terms:
>
> --cut--
> JGraphT Licensing Information
> =============================
>
> JGraphT may be used under the terms of either the
>
>   * GNU Lesser General Public License (LGPL) 2.1
>     http://www.gnu.org/licenses/lgpl-2.1.html
>
> or the
>
>   * Eclipse Public License (EPL)
>     http://www.eclipse.org/org/documents/epl-v10.php
>
> As a recipient of JGraphT, you may choose which license to receive the code
> under.
> --end--
>
> This also includes future commits. Contributions will only be accepted with
> the understanding that the contributor's code will be released under both
> licenses and that a user may freely choose between one of the licenses.
>
> Contributions to JGraphT have up to this point been LGPL-only, with no
> Copyright License Assignment (CLA) required from contributors. As such,
> relicensing requires seeking the consent of all contributors (or possibly
> removing contributions for which such consent has been withheld). We will
> make a best effort to contact all past contributors and request their
> consent. JGraphT has a long history (going back ten years to 2003),
> including many small contributions from one-time contributors. If we don't
> hear back from someone within a few months, we'll assume Qui tacet
> consentiret. Until copyright expiration, this may leave a very small amount
> of unavoidable legal risk for those who choose to rely on the EPL licensing
> option. There is no risk for those who continue to use JGraphT under the
> LGPL option.
>
> We collected all contributors from the git authors, from the authors and
> contributors listed in each java file, and from CONTRIBUTORS.md. These are
> 65 persons. We will try to find out the contact data of everyone and ask
> them if they agree to additionally license their work under EPL.
>
> Looking forward to hearing your opinion.
>
> Greetings,
>
> Oliver and John
>
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