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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.

11 questions from the last 365 days
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3 votes
1 answer
99 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 ...
orematasaburo's user avatar
4 votes
2 answers
82 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 ...
AvidCoder's user avatar
  • 189
6 votes
4 answers
1k 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 ...
Crimson's user avatar
  • 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 ...
Zosoled's user avatar
  • 103
2 votes
1 answer
48 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 ...
Honeybear's user avatar
  • 175
4 votes
1 answer
93 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....
Dolz Mory's user avatar
3 votes
1 answer
55 views

How to properly go about bundling an LGPLv2.1+ header in a GPLv3 project

I am developing a personal project (licensed under GPL-3.0-only) which I am trying to keep portable across different POSIX-compatible systems, but it is dependent on macros and typedefs from GLIBC's ...
Eli Minkoff's user avatar
3 votes
1 answer
44 views

Can I use spacy model licenced under CC BY-SA 4.0 Deed and don't change the license of my code?

I want to use korean spacy model, but it's licensed CC BY-SA 4.0 Deed, If I add this model to my binary file, will I have to license my code under CC BY-SA 4.0 Deed? (Important part of my program is ...
Vazno's user avatar
  • 31
7 votes
1 answer
1k views

What copyleft license could I use for a program that depends on non-free libraries?

My specific case is to make an open source game using Unreal Engine. I'd like that game to be "copyleft": I give the source code, and anyone can use it to make improved versions of the game, ...
youen's user avatar
  • 225
3 votes
2 answers
361 views

What if I don't open-source my code after using a copyleft public repo?

I plan to build an app based on a public repo with a copyleft license (AGPL-3.0 license). I don't want to open-source my own code (my own code will just server and front-end code, which are built on ...
Kism281's user avatar
  • 39
4 votes
1 answer
184 views

What is the best weak copyleft licence against patent trolling?

To avoid an XY question, the general requirements I have are: The licence should not impose operational complexity for downstream users of a library (users should not be forced to think about linking)...
saolof's user avatar
  • 185