[danuker]

Suppose Copilot offered some pure-MIT licensed flavor.

Copilot could comply with MIT licenses by just outputting an MIT license with ALL the authors of code used in training.

[JoshTriplett]

That'd be a valid solution, if impractical. I doubt that people would be willing to copy hundreds of thousands of license notices into their project.

[danuker]

One perspective is that those authors actually contributed to the end result.

But sure, disk size could be a problem.

[JoshTriplett]

> One perspective is that those authors actually contributed to the end result.

They absolutely did, yes. The approach you're suggesting would work from a legal perspective, but the size might pose practical problems.