this derivation will be built:
  /nix/store/l4pw36idjvqfng9f9bpmj5516fhvbp6c-site-env-15.drv
building '/nix/store/l4pw36idjvqfng9f9bpmj5516fhvbp6c-site-env-15.drv' on 'ssh-ng://nixbot-remote-build@78.232.36.247'
building '/nix/store/l4pw36idjvqfng9f9bpmj5516fhvbp6c-site-env-15.drv'
site-env-15> created 1 symlinks in user environment