this derivation will be built:
  /nix/store/ycnvpv3n8dby7jn2099k7fsjsypp2821-check-skills-installer.drv
building '/nix/store/ycnvpv3n8dby7jn2099k7fsjsypp2821-check-skills-installer.drv'

upload niks3: ok