these 2 derivations will be built:
  /nix/store/v6kv8cc3c8ldfy3msad8m2z6yjlac3cb-flake-inputs.drv
  /nix/store/m0arh2pzc3fjmg1n4dzqygby0brvqiy5-check-flake-inputs.drv
building '/nix/store/v6kv8cc3c8ldfy3msad8m2z6yjlac3cb-flake-inputs.drv'
building '/nix/store/m0arh2pzc3fjmg1n4dzqygby0brvqiy5-check-flake-inputs.drv'

upload niks3: ok