this derivation will be built:
  /nix/store/h4ifghnfnmn4zy6dnfalp75zsq9cg4bg-structure-inventory-class-discovery.drv
building '/nix/store/h4ifghnfnmn4zy6dnfalp75zsq9cg4bg-structure-inventory-class-discovery.drv'

upload niks3: ok