I must have misremembered it because I also can't find an official AI policy.But the devs have banned LLMs in their issue tracker, at the very least:

• https://gitlab.archlinux.org/archlinux/packaging/packages/onnxruntime/-/work_items/18#note_460864
• https://gitlab.archlinux.org/archlinux/packaging/packages/mkinitcpio-systemd-tool/-/work_items/3#note_503832
• https://gitlab.archlinux.org/archlinux/packaging/packages/python-huggingface-hub/-/work_items/43#note_504464