these 2 derivations will be built:
  /nix/store/x4gsl9r8cad9a414pdfrfn4zx34q246s-flake-inputs.drv
  /nix/store/rx6xliybx70dlxlaj8384c3ks14zpzh4-check-flake-inputs.drv
building '/nix/store/x4gsl9r8cad9a414pdfrfn4zx34q246s-flake-inputs.drv'
building '/nix/store/rx6xliybx70dlxlaj8384c3ks14zpzh4-check-flake-inputs.drv'

upload niks3: ok