this derivation will be built:
  /nix/store/kbgrm8bwp5fjjw4xj7d8chjh8h9gbdmv-check-claudebox.drv
building '/nix/store/kbgrm8bwp5fjjw4xj7d8chjh8h9gbdmv-check-claudebox.drv'

upload niks3: ok