these 2 derivations will be built:
  /nix/store/kd4in8vhzmfd4s2n669vv7s3ryx54jvk-nix-grpc-store-0.2.3.drv
  /nix/store/p8sch2jg5zq1bzqyx6p5116wy1h6ahqv-nix-grpc-store-dispatcher.drv