Questions tagged [derivative-works]

For questions about works that derive their core from another open work.

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6
votes
3answers
114 views

If I create a derivative work of code that follows a protocol, am I still bound by its license?

I'm giving myself a headache just thinking about this, so would appreciate anyone else with an opinion. First, off, a note: I'm absolutely aware that my current code is a 'derivative work' - That's ...
1
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2answers
261 views

GNU GPL question: Do I need to open source my entire app?

I am using the Telegram API (licensed under GNU GPL) to integrate chat services within my own application. The developer of Telegram asks to - "Please remember to publish your code too in order to ...
6
votes
2answers
97 views

Can I take a few classes out of a library and use it in my project or should I always use the entire library?

Let's say I need a piece of functionality and there is a library on GitHub, licensed under Apache 2.0, that provides that funcionality. There are a couple of use cases that can occur that I would ...
10
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2answers
358 views

Recourse for forks ignoring open source license on original code in App Store?

I used to contribute to a free iOS app on GitHub that was released under the Mozilla Public License Version 2.0. Multiple people have since taken the code from that GitHub repository and released ...
3
votes
2answers
113 views

Does modifying and using a GPL program on a single hardware makes all the project GPL?

I had a bit of a chat at work concerning an ongoing project and I wanted to ask about it to a community who knows about GPL. I’m far from being an IT specialist (and a licensing specialist also) so ...
1
vote
1answer
75 views

Are YouTubers Allowed to Record any Game [closed]

For games like minecraft it is released under "LGPL 2.1 or later", does this mean that if you record Minecraft the video must also be released under the LGPL 2.1 or later? Is a separate license ...
24
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2answers
913 views

Ramifications of the proposed new SE licensing model

Like many other people I read this meta post. Since I don't really understand what is at stake I became confused and worried. Does this mean that I can legally force any organization to let me see ...
5
votes
2answers
722 views

Can I sell closed source software which uses some CC BY-NC-SA code?

Can I sell software which uses someone else's code which is licensed under Attribution-NonCommercial-ShareAlike 3.0 Unported? The software is closed source, and aside from the borrowed code, is ...
7
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2answers
408 views

Using GPL-ed library from code with more permissive license (MPL-2)

I'm writing a library and a tool on top of it, and I would like to release both under MPL-2. However, the library has an optional dependency, another library which is released under GPL (not LGPL). I ...
11
votes
3answers
4k views

Is it allowed to dynamically link a GPL licensed library for commercial use?

I would like to use a dynamically linked library with GPL V2 license for adding remote support to my existing C++ application. I use the library without modifications of the library code. Do I need ...
6
votes
5answers
435 views

Preventing people from forking and profiting over minor changes

Twinone App Locker is an Android app. It used to be open-source, released under an Apache 2 License. It was ad-supported. People forked it. If I understand correctly, they tended not to make any ...
11
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2answers
2k views

Can I license Python project under 3-clause BSD while it has GPL-based dependencies

I'm working on an open source Python project and we have plans to use GPLv2-licensed library python3-xlib, but we will not distribute it with our library. So user can install it by pip install our-lib ...
4
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1answer
564 views

Software license with external libraries

Scenario I plan to share the source code of a larger software that depends on external libraries. The directory structure of the project is as follows src/ ... my source code ext/ ... ...
1
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0answers
52 views

How to license a mashup? [duplicate]

I have designed a mashup that uses open source software. A substantial part of another open source project was used and the software of that project was made available under the MIT license. There is ...
6
votes
1answer
1k views

How do I license code when rewriting code in another language? [duplicate]

I took the C code from the png2theora example tool of Xiph.Org Theora which has a copyright header: /******************************************************************** * ...
13
votes
3answers
541 views

Does using GNU Unifont in a game make the game GPL?

GNU Unifont is a fontface licensed under the GNU GPLv2 or later with this exception: The license for the compiled fonts is covered by the above GPL terms with the GNU font embedding exception, as ...
5
votes
2answers
141 views

Do I have to include the PSF's notice of copyright?

I have a class which inherits from one in the standard library of Python 2.7.6. I would like to meet the conditions of the license of that code, which is the PSF LICENSE AGREEMENT FOR PYTHON 2.7.6 ...
11
votes
2answers
285 views

What counts as adaptation for using code licensed under CC BY-SA 4.0 in software licensed under GPLv3?

Since 2015-10-08, GPLv3 is listed as one-way compatible license for CC BY-SA 4.0: […] you may license your contributions to adaptations of BY-SA 4.0 materials under GPLv3, but you may not license ...
19
votes
3answers
530 views

Is the code generated from a GPLv3 EBNF grammar a derivative work?

So, I'm really unclear on this situation and what it means. I have an EBNF-based grammar file that we use for our project. This EBNF grammar describes rules for parsing/lexing a document (e.g. some ...
7
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0answers
68 views

Relicensing MIT Work [duplicate]

There's a web app released under the MIT license that I am forking. If I were to still keep it under the MIT from what I understand I would change the notice to something like: Copyright (c) 2015 [...
53
votes
7answers
4k views

Is requiring a license a violation of the GPL? Can I get around it?

At work, we use a version of GCC provided by a vendor of a proprietary OS. The vendor has modified gcc so that it will only run if it successfully acquires one of a limited number of licenses we've ...
8
votes
1answer
109 views

Is a derivative work necessarily written in same language as the one it derives from?

For example, a C repository built upon the ideas from a (say) JavaScript project - is it a derivative work based on the latter? To clear things up little bit, i'd give a more detailed example; ...
13
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2answers
479 views

Does the CC-BY-SA License require that source code of derivative works be shared?

For example, if I create a LaTeX file and license it with CC BY SA, can someone create a derivative work, but only publish the PDF, without giving out the derived LaTeX source code? Does this fall ...
7
votes
1answer
576 views

What license options do I have for licensing ported source code?

If, I port Ruby on Rails (licensed under MIT) from Ruby to Java what license options do I have? Would I have to use MIT or a compatible license?
14
votes
1answer
435 views

GPL - Does “internal use” apply for a public gameserver?

While reading through the GPL FAQ I found some relevant points to the question, however it is still unclear to me if this fully applies to a public gameserver. I'll try to keep it short: There is a ...
6
votes
1answer
113 views

Redistribution of derived works under MSR-SSLA

The Microsoft Research Shared Source License Agreement (MSR-SSLA) is a odd kind of "Open Source" licenses. FSF considers in "nonfree" as it does not allow commercial use. I would like to ...
18
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2answers
1k views

Borrowing ideas rather than code from open source projects

I work in a field where people (competitors?) reverse engineer things, and for this reason, there are many implementations around, all of which are open source. Sometimes in order to save time, I look ...
12
votes
2answers
421 views

Are derivative works a subset of combined works?

This question stems from discussion of a question on programmers.stackexchange.com. In the LGPL 3.0 section 4 "Combined Works" it states: You may convey a Combined Work under terms of your choice ...
2
votes
1answer
1k views

When is making a subtitle file for a commercial movie legal? [closed]

For example, on OpenSubtitles, a website which offers 3.5mln subtitles we can read Disclaimer: These files are NOT illegal warez downloads, we only offer files that we believe we are free to ...
11
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3answers
3k views

When is my project a derivative work in an interpreted language?

With compiled languages, I understand when a work is considered derivative of another and thus, a license such as the GNU GPL covers the whole work. However, with interpreted languages such as PHP or ...
12
votes
5answers
686 views

Appropriate licence for later merging back

I am a library developer. I want to open source it soon, but I'm not sure what license will work best for me. My main concerns are: I want to provide a commercial license for somebody who is willing ...
7
votes
2answers
624 views

Are there examples of proprietary software that functionally depends on copylefted software?

This question is a follow-up on: Are there examples of proprietary software that functionally depends on free software? Please note that this is not a duplicate, as "copylefted" (and some more, see ...
4
votes
1answer
566 views

What is the difference between a license, and an EULA when forking a project?

A open software license generally outlines what conditions that a fellow software developer must follow in respect to the original project, be it someone who is plain out of the blue looking at it, ...
9
votes
1answer
211 views

What counts as a modification when using a CMS licensed under AGPL 3.0?

On my Web server, I’m using a CMS licensed under AGPL 3.0. I’m required to provide the source code of this CMS only if I have modified it. But what exactly counts as a modification? It certainly is ...
0
votes
3answers
884 views

Can I charge a royalty for derivatives of my project that are used commercially?

An interesting thought popped up to me earlier today as I was developing my project. My thought was whether I could charge royalties for a derivative (being used commercially) of my project. Would ...
8
votes
1answer
200 views

Can I apply an open source license if I referenced copyright documentation during development?

I am working on python library that wraps a non-free C library. In order to develop this, I referenced the C library's copyrighted documentation. Because of that my function and variable names are the ...
14
votes
3answers
784 views

Does using Eclipse wizards to generate code make my software a derivative?

I am using Eclipse to code my program. After doing research on the Eclipse website I found that there was no clear answer to my question. My issue is that I need to be able to license my software ...
13
votes
3answers
1k views

Derivatives and Forks… Is there a difference?

The terms fork and derivative have really been bugging me as I always seem to imply that their different, but then in many ways the same. You hear the term fork many times on platforms such as Github, ...
3
votes
1answer
93 views

Do I own derivatives of my copy written work? Can I make these open source?

Suppose I have a software program I publish under a non-free license that does not give permission to create derivatives, and I own the copyright. Someone decides that despite the copyright they are ...
20
votes
2answers
5k views

Can I sell my MIT-licensed software if it is modified by others?

Suppose I create some software from scratch. I sell the software, but I also keep it open source under the MIT License. Someone forks my repository and makes some great improvements to my software. ...
8
votes
2answers
521 views

Are there examples of proprietary software that functionally depends on free software?

This question is a follow-up on a number of questions that all mention some sort of software architecture X for creating software composites, and then goes on to ask: "Will using X to create a ...
7
votes
2answers
332 views

Does sharing a file format make two programs either a combined or derived work?

This is a follow on from Does a file format constitute an API? This is an attempt to break down: Does a host application's license apply to plug-ins written for it? into the underlying questions. ...
19
votes
4answers
727 views

What are the arguments for considering dynamic links to *not* constitute derivative works?

The status of programs which are dynamically linked with Copyleft licensed binaries (such as a .dll) is contentious. I have created two questions for each side of the debate. The other can be found ...
13
votes
2answers
626 views

What are the arguments for considering dynamic links to constitute derivative works?

The status of programs which are dynamically linked with Copyleft licensed binaries (such as a .dll) is contentious. I have created two questions for each side of the debate. The other can be found ...
4
votes
3answers
461 views

Can I force additional notices in my open source project?

Answering a question here put me in a drawback. In Open Source projects, it's clear that copyright notices shall be retained, especially when they contain copyleft and share alike clauses. However, ...
7
votes
2answers
120 views

Do I have full rights over derived works of my CC BY works?

Suppose I publish a product under a CC-BY license. Someone takes my product and remakes it into a slightly different product and publishes that under another license. Even though a version of my ...
14
votes
2answers
3k views

Do I have to release my code as GPL when a Java Library is GPL

I have found a Java library that can be used under the GPL licence (not the LGPL licence). Can I embed the library in my program without the requirement of using the GPL licence? I have no ...

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