these 2 derivations will be built:
  /nix/store/5fcbcnl1qk4dwp0b1xr69fxy9jyk529i-flake-inputs.drv
  /nix/store/rzgz48r53g0vmwam6h1ka34bnh4dmmyv-check-flake-inputs.drv
building '/nix/store/5fcbcnl1qk4dwp0b1xr69fxy9jyk529i-flake-inputs.drv'
building '/nix/store/rzgz48r53g0vmwam6h1ka34bnh4dmmyv-check-flake-inputs.drv'

upload niks3: ok