this derivation will be built:
  /nix/store/mpys6k04zqb35vc6x2n23jvmqcvi4zqn-structure-nixos-configurations.drv
building '/nix/store/mpys6k04zqb35vc6x2n23jvmqcvi4zqn-structure-nixos-configurations.drv'

upload niks3: ok