this derivation will be built:
  /nix/store/slmb74wyxrdcd8jdj9i93sq7fq3vn617-check-cc-switch-cli.drv
building '/nix/store/slmb74wyxrdcd8jdj9i93sq7fq3vn617-check-cc-switch-cli.drv'

upload niks3: ok