this derivation will be built:
  /nix/store/ysdz9if5savgndjlpvng4j6r1v5qyrxl-nix-grpc-store-0.1.0.drv
building '/nix/store/ysdz9if5savgndjlpvng4j6r1v5qyrxl-nix-grpc-store-0.1.0.drv' on 'ssh-ng://customer@mac02'