That's good to know, I wasn't aware of it, I have updated to using a github action they recommend (https://github.com/marketplace/actions/setup-zig-compiler)

For the copyright thing, I understand that there's legit ongoing debate around all this AI-assisted coding and copyrightability.

In this case of zpdf, while Claude Code did a lot of the heavy lifting on implementation, there was a real effort in architecture decisions, iterative prompting/refinement, debugging, testing, benchmarking.

My intent is zero restrictions: use it, fork it, sell it, whatever. WTFPL captures that spirit perfectly for me. It's as permissive as legally possible while being upfront about not caring.

The goal is just to make a useful tool freely available.

Edit: I have changed it to CC0.