these 2 derivations will be built:
  /nix/store/mz5f7blqayvbkakb3c8p2lbr8dg15jkl-flake-inputs.drv
  /nix/store/dmzmzp45yn6prlqkgav4ki6f1yfbmgp5-check-flake-inputs.drv
building '/nix/store/mz5f7blqayvbkakb3c8p2lbr8dg15jkl-flake-inputs.drv'
building '/nix/store/dmzmzp45yn6prlqkgav4ki6f1yfbmgp5-check-flake-inputs.drv'

upload niks3: ok