this derivation will be built:
  /nix/store/gb72ghr55fnvfd75lvbrprf3d5ipv8qh-pi-clan-service-nix-eval-test.drv
building '/nix/store/gb72ghr55fnvfd75lvbrprf3d5ipv8qh-pi-clan-service-nix-eval-test.drv'
pi-clan-service-nix-eval-test> OK: kiwi (loopback exec + client) + traube (dual-stack exec + PWA at agent-traube.pin) auto-wired