this derivation will be built:
  /nix/store/vn2ma254c1ywib19kfbh9sjjpj7rncnj-inputDerivation-deploy-fly.drv
building '/nix/store/vn2ma254c1ywib19kfbh9sjjpj7rncnj-inputDerivation-deploy-fly.drv'...