ip-governance

1 item

Simon Willison's Weblog 2026-03-08-2

Can coding agents relicense open source through a "clean room" implementation of code?

Coding agents can now reimplement GPL codebases against test suites in hours, making copyleft economically unenforceable. The chardet LGPL→MIT relicensing dispute is the first clean test case, but the real bomb is training data contamination: if the model was trained on the original code, no "clean room" claim holds. Generalizes to any governance mechanism that relies on cost-of-reimplementation as friction.