this derivation will be built:
  /nix/store/3pqf98rj7h7m7f24ginvv0wgczyj8hv6-check-grok.drv
building '/nix/store/3pqf98rj7h7m7f24ginvv0wgczyj8hv6-check-grok.drv'

upload niks3: ok