this post was submitted on 08 Apr 2026
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I'm mostly just playing along with your thought experiment. As I said, we know that projects are already accepting LLM code into projects that are nominally copyleft.
If that is the case, is chardet 7.0.0 a derivative work of chardet, or is it a public domain LLM work? The whole LLM project is fraught with questions like these, but it seems that the vendors at least are counting on not copying leaked software and instead copying open source code that is publicly hosted.
Why is it okay to strip copyright from open source works but not from leaked closed source works?
We know that Disney is suing to protect its works - if it is true that LLM outputs are transformative, they should lose, as should any vendor whose leaked code was "transformed" by an LLM.
I think the reimplementation stuff is a separate question because the argument for it working looks a lot stronger, and because it doesn't have anything to do with the source material having LLM output in it. Also if this method holds as legally valid, it's going to be easier to just do that than justify copying code directly (which would probably have to only be copies of the explicitly generated parts of the code, requiring figuring out how to replace the rest), which means it won't matter whether some portion of it was generated. I don't see much reason to think that a purist approach to accepting LLM code will offer any meaningful protection.
So what though? If they aren't entirely generated, you can't make a full fork, and why would a partial fork be useful? If it isn't disclosed what parts are AI, you can't even do that without risking breaking the law.
Is it a separate question, though?
Both works are copyrighted, one is just copyrighted as "all rights reserved" (our leaked commercial code) and the rest is licensed as LGPL. We're putting both pieces of code inside the LLM and then asking the LLM to make a new version.
What makes the action of leaking different from the act of putting it on the web? Rights are reserved in either case.
Well, people are contributing to copyleft codebases expecting that when people build on their work, that work (the derivative works) are also licensed in the same way. You don't need to fork for the value to be lost. People expected virality to be part of their contribution, and clearly the new derivative works are partially non-copyleft.
Beyond that, as more of the codebase is LLM produced, the less of it is protected by the copyleft license, until we have a ship of Theseus situation where the codebase is available, but no longer copyleft. That is clearly not what was intended by e.g. the GPL. Just look at the Stallman quote in post.