these 2 derivations will be built:
  /nix/store/90b5m0sqm6fhmzlwf4f4h0yna57kh6xb-nix-grpc-store-0.2.3.drv
  /nix/store/p2klqc8ag5dn9sllj58x42vl8kfvip8k-nix-grpc-store-dispatcher.drv