alt Hacker NewsI know it's not popular on HN to have anything but supportive statements around GPL, and I'm a big GPL supporter myself, but there is nuance in what is being said here.
That case was important, but it's not abojt the virality. There have been no concluded court cases involving the virality portion causing the rest of the code to also be GPL'd, but there are plenty involving enforcement of GPL on the GPL code itself.
The distinction is important because the article is about the virality causing the whole LLM model to be GPL'd, not just about the GPL'd code itself.
I'd like to think it wouldn't be a problem to enforce, but I've also never seen a court ruling truly about the virality portion to back that up either - which is all GP is saying.
There is no "virality", and the article's use of "propagation" to mean the same thing is wrong. The GPL doesn't "cause" anything to be GPLed that hasn't been explicitly licensed under the GPL by the owner of its copyright. The GPL grants a license to use the copyright material to which it applies. To satisfy the terms of that license for a particular use may require that you license other code under the GPL, but if you don't the GPL can't magically make that code GPLed. You will, however, not be covered by the license so unless your use is permitted for some other reason (eg. fair use or a different license you have been granted) your use of the the original code will be a violation of copyright. All of this has been repeatedly tested in court.
It's sad to see Microsoft's FUD still festering 20 years later.