these 2 derivations will be built:
  /nix/store/a2w568m5yw3xv5k0108isj5fp1hfack8-flake-inputs.drv
  /nix/store/9i26iqrcskm6g4gsca975qvdgijzjmki-check-flake-inputs.drv
building '/nix/store/a2w568m5yw3xv5k0108isj5fp1hfack8-flake-inputs.drv'
building '/nix/store/9i26iqrcskm6g4gsca975qvdgijzjmki-check-flake-inputs.drv'

upload niks3: ok