After my repeated posts / boosts arguing that in OSS we’ve overemphasized licenses and underemphasized community, governance, and sustainability…I actually have a license question:

What’s the current thinking on licenses that lay the legal groundwork for action against people using OSS source code for LLM training without seeking permission or offering compensation?

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The obvious answer is copyleft-type licenses.

(1) Has anybody done legal analysis on that beyond the obvious? I don’t think LLM training on copyleft code has been tested in court yet…? (Even LLM training on more restrictively licensed works seems to be surviving court challenge….)

(2) Are there copyleft licenses (i.e. “derived works must be similarly licensed”) out there that don’t have the Stink of Stallman on them? Or is GPL v3 still just the way to go despite the smell?

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@inthehands Copyleft licenses that aren't GPL: The Mozilla Public License and the EUPL. There may be others, but those are the ones I know about.

If I ever were to start making software for the fun of it again, I would possibly use EUPL.

@datarama
EUPL is a good tip. I’d been eyeing it casually, and I will now eye it seriously.