this derivation will be built:
  /nix/store/bm9va0aqcmh31snlw1cgvn1l0068v8b8-check-mcptoon.drv
building '/nix/store/bm9va0aqcmh31snlw1cgvn1l0068v8b8-check-mcptoon.drv'

upload niks3: ok