these 2 derivations will be built:
  /nix/store/pi2xi502vlkj68mxkrds6bpdzg13hxr4-ck-0.8.1.drv
  /nix/store/babw4zffl8ildvimhgr4zwjyp8z5355l-check-ck.drv

upload niks3: ok