these 2 derivations will be built:
  /nix/store/c3xm4zz0g86jm12rli7imfvzby2ihiax-nix-grpc-store-0.2.3.drv
  /nix/store/0n759wkqw9jnc35izsz6z3vawascr4h1-nix-grpc-store-dispatcher.drv