these 2 derivations will be built:
  /nix/store/p4wip7n01scw3a32zb4m008z2pc42haw-flake-inputs.drv
  /nix/store/p856dqvcjpspdya705mfjpgh3pmxzlgd-check-flake-inputs.drv
building '/nix/store/p4wip7n01scw3a32zb4m008z2pc42haw-flake-inputs.drv'
building '/nix/store/p856dqvcjpspdya705mfjpgh3pmxzlgd-check-flake-inputs.drv'

upload niks3: ok