these 3 derivations will be built:
  /nix/store/fgsczy8h8bs4g60v1cv09spkzwwhfdwl-ck-0.8.1-vendor.drv
  /nix/store/4kgiis2x0gxrvjk0as8xzdn44w3nvwd8-ck-0.8.1.drv
  /nix/store/pss4npaz7483437zf1w3a5j893mz6d9y-check-ck.drv

upload niks3: ok