disabling binary cache 'https://cuda-maintainers.cachix.org' for 60 seconds
warning: unable to download 'https://cuda-maintainers.cachix.org/nix-cache-info': HTTP error 401

         response body:

         Binary cache cuda-maintainers doesn't exist or you're not authorized to access it. Check the name for typos and/or provide an auth token. Contact support on https://cachix.org if you're stuck.
these 2 derivations will be built:
  /nix/store/qlzp2x2fja15b78smvkavj6dpw2bganp-source.drv
  /nix/store/fjl1dilabl7x89r0k965zs6gszvc9rq3-pi-agent-extensions-0.1.0-unstable-2026-07-28.drv