Questions tagged [derivative-works]

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

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5
votes
2answers
226 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
419 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 ...
20
votes
3answers
681 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
votes
0answers
70 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 [...
55
votes
7answers
5k 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
112 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
votes
2answers
655 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 ...
8
votes
1answer
791 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
547 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
130 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
2k 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
605 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 ...
3
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 ...
13
votes
3answers
5k 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 ...
13
votes
5answers
708 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
669 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
644 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
289 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
1k 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
237 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
816 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
95 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 ...
22
votes
2answers
7k 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
584 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
358 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. ...
26
votes
4answers
1k views

What are the arguments for considering dynamic links not 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 ...
17
votes
2answers
1k 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
466 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
135 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 ...
15
votes
2answers
4k 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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