this derivation will be built:
  /nix/store/afcydr6q548a48489kgc5zd2bdqlb2r0-nix-grpc-store-0.1.0-beta.4.drv
building '/nix/store/afcydr6q548a48489kgc5zd2bdqlb2r0-nix-grpc-store-0.1.0-beta.4.drv' on 'ssh-ng://customer@mac02'
building '/nix/store/afcydr6q548a48489kgc5zd2bdqlb2r0-nix-grpc-store-0.1.0-beta.4.drv'