these 2 derivations will be built:
  /nix/store/16rgafagplr9kjq4k5szs1d4fwr36qs2-flake-inputs.drv
  /nix/store/47zhcf4khh19yji427cs9xndrwqyvzms-check-flake-inputs.drv
building '/nix/store/16rgafagplr9kjq4k5szs1d4fwr36qs2-flake-inputs.drv'
building '/nix/store/47zhcf4khh19yji427cs9xndrwqyvzms-check-flake-inputs.drv'

upload niks3: ok