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INRIA / spoon

Spoon is a metaprogramming library to analyze and transform Java source code. :spoon: is made with :heart:, :beers: and :sparkles:. It parses source files to build a well-designed AST with powerful analysis and transformation API.
http://spoon.gforge.inria.fr/
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License questions about CeCILL-C #1861

Closed leventov closed 6 years ago

leventov commented 6 years ago
monperrus commented 6 years ago

Under what license is Spoon released: CeCILL-C 1, 2, or 2.1?

According to License.txt this is CeCILL-C 1, see https://github.com/INRIA/spoon/blob/master/LICENSE.txt#L516

With what licenses is it compatible?

Good question, let us ask to Inria law people.

leventov commented 6 years ago

This page: https://www.gnu.org/licenses/license-list.en.html says that CeCILL-C 1 is incompatible with GNU licenses.

Please consider relicensing under CeCILL-C 2.1 (at least; more commonly used and more permissive licenses are better) that should be compatible with LGPL.

leventov commented 6 years ago

It seems that currently, probably all software that depends on Spoon should be CeCILL-C 1-licensed, that's hard to believe in.

monperrus commented 6 years ago

CeCILL-C is similar to LGPL, it means that:

Under what license some source code that is modification of or amendment to Spoon source code should be released?

The same license, CeCiLL-C

Under what license some source code that uses Spoon as a Java library should be released?

Basically anything, incl. proprietary licenses.

leventov commented 6 years ago

It's not, however, how LGPL works, unless you provide the library only in runtime and don't bundle it into any kind of uberjar.

surli commented 6 years ago

It's not, however, how LGPL works, unless you provide the library only in runtime and don't bundle it into any kind of uberjar.

That not what I understand when reading CeCILL-C FAQ:

If you distribute a program that is a modification of a program under one of the licenses in the CeCILL family, or that incorporates such a program,totally or partially, that is where the differences are. [...] If the program is under CeCILL-C, you can also distribute your program under any license but you have to distribute under CeCILL the possible modifications you did to the original source code (and mention the use you made of the initial program).

Source: http://www.cecill.info/faq.en.html#differences

monperrus commented 6 years ago

Please consider relicensing under CeCILL-C 2.1

Note that "CeCILL-C 2.1" does not exist. There is only "CeCILL 2.1" (no "C" version).

Relicensing under CeCILL 2.1 would be much less permissive for users.

leventov commented 6 years ago

Ok, to wrap up this question: do I understand it right that CeCILL-C 1 is more permissive than LGPL but less permissive than Apache, MIT, BSD licenses?

surli commented 6 years ago

do I understand it right that CeCILL-C 1 is more permissive than LGPL but less permissive than Apache, MIT, BSD licenses?

It's surely less permissive than Apache, MIT and BSD licenses, as it should be released using the same license if changes has been done inside the library. Still I cannot say it's more permissive than LGPL as I always considered it as a "LGPL for french law", but I'm not a lawyer :)

surli commented 6 years ago

@leventov I close this one. Don't hesitate to comment back if you have further question.

monperrus commented 5 years ago

FYI Spoon is now dual-licensed MIT & Cecill-C, see #2950

climbfuji commented 1 year ago

Apologies for using this thread for a related question, does anyone know whether the Cecill-C licenses are compatible with Apache 2, which versions of Cecill-C (if applicable), and whether this is one-way or both-ways (e.g. Apache 2 can be embedded in GPL3, but not the other way round). Thanks!