this derivation will be built:
  /nix/store/0s9nj8bhwa29w1pgqi8sz5df9xjx6fxm-run-sigma-vm-on-aarch64-darwin.drv
building '/nix/store/0s9nj8bhwa29w1pgqi8sz5df9xjx6fxm-run-sigma-vm-on-aarch64-darwin.drv' on 'ssh-ng://builder@build04.clan.lol'
building '/nix/store/0s9nj8bhwa29w1pgqi8sz5df9xjx6fxm-run-sigma-vm-on-aarch64-darwin.drv'

upload niks3: ok