these 2 derivations will be built:
  /nix/store/pd1p1ss6cz701nzgyg7phkjwbhs7408g-nix-grpc-store-0.2.2.drv
  /nix/store/b42smsal6p9g2yb03gyz8px9fgnhfdm1-nix-grpc-store-dispatcher.drv