these 2 derivations will be built:
  /nix/store/qcj0irrnyxlyi5ci85jj9pdgqs13028f-nix-grpc-store-0.2.1.drv
  /nix/store/l696njl4355jv6va4izwppxh5z8icyic-nix-grpc-store-dispatcher.drv