Questions tagged [copyleft]
For questions about the copyleft concept (also known as Share-Alike), a concept that promotes or enforces the use of the same or compatible license for derived works.
208 questions
3
votes
2
answers
297
views
Can a dual-licensed project include code only compatible with one of the licenses?
I have a project licensed under the EUPLv1.2 license, and I want to incorporate GPLv3-licensed code in it. However, due to the GPL's copyleft, that is not legally possible.
Is it possible to dual-...
- 133
12
votes
2
answers
2k
views
Hypothetical copyleft exposure developer on proprietary project, legal?
Let's say I have contributed to, or at least learn how to code by reading from, a copyleft project. Or maybe, to be specific, I have been rewriting a C-based GPLv2 code into Rust-based GPLv2 code, ...
- 319
7
votes
1
answer
496
views
Putting a project's BSD code on GitHub and modifying it
There's a project I'd like to work on and change. It's released under the two-clause BSD license. But the code is only distributed in the zip files you get along with precompiled executables.
I assume ...
- 173
2
votes
1
answer
168
views
Can I sue for Copyright Infringement if I contributed some code to the project?
I'm starting to get into writing Free (as in Freedom) software and I want to make sure I do it properly. I prefer to license my work under a copyleft license since I don't want my code to be given to ...
5
votes
1
answer
198
views
Is this license "viral"?
The background to this question is that I'm building a physics library in C++, and I'm looking for code to implement some of my functionalities. I found this program (linked in full here https://www....
2
votes
0
answers
43
views
How much can one code be inspired by another, but use different license? [duplicate]
I'm writing code for a program in Typescript (aiming for MIT license) and based off an original program written in Matlab, C++ etc (using GPL v2 license.)
The original comes from a paper, and most of ...
- 29
1
vote
1
answer
135
views
How to modify the EPL-2.0 to consider network use as distribution?
Some time ago, I asked the following question: Is there an open-source license between MPL, LGPL, and AGPL that meets these criteria?.
I couldn't find an easy way to meet all five requirements. ...
- 245
13
votes
2
answers
5k
views
Why is Curl licensed under an MIT-like license despite using a GPL library?
Curl is licensed under MIT-like license, but it can use the WolfSSL library, which is licensed under GPLv2. Why doesn't WolfSSL's GPLv2 copyleft "viral" effect cover Curl? Is it because ...
- 325
5
votes
2
answers
1k
views
Can I use copyleft-licensed library in MIT-licensed project?
Can I use copyleft-licensed (for example, GPL-2.0) library in MIT-licensed project in the following cases:
a) Library files are located in project's repository directly;
b) Library files are not ...
- 325
3
votes
1
answer
140
views
MPL for core C++ and MIT for python interface and others: is this sound?
I'm developing a high-performance algorithm library for robotics applications. The implementation consists of C++ core algorithms with Python bindings and YAML configuration support.
My objective is ...
- 133
4
votes
2
answers
270
views
Is there an open-source license between MPL, LGPL and AGPL that meets these criteria?
I am looking for an open-source license that satisfies the following five conditions:
Copyleft: The license requires that derivative works must also be distributed under the same license (similar to ...
- 245
6
votes
4
answers
2k
views
Does AGPL-3.0 require open-sourcing the derivatives if the original work is open-source?
The website of a library licensed under AGPL-3.0 states the following (emphasis mine):
AGPL-3.0 License
This OSI-approved license is designed with students and enthusiasts in
mind, championing open ...
- 169
10
votes
2
answers
1k
views
How do I resolve license terms conflict when forking?
A project I would like to fork clearly states that it is released under the MIT license terms and includes the relevant LICENSE file. Separately, it also has a line in its CONTRIBUTING file that ...
- 103
2
votes
1
answer
87
views
Implications of the AGPL 3.0 License for integrated methods
We are developing a toolkit primarily as a QGIS Plugin (basically a collection of Python code and related scripts that can be run within QGIS). It is a collection of tools and algorithms revolving ...
- 247
4
votes
1
answer
123
views
Removing the statement "Powered by" under GPLv3
I would like to know, if I can remove the statement "Powered by GrandNode" from the footer, where GrandNode published under the license GPLv3.
Here is the official website: https://grandnode....
- 41