these 2 derivations will be built:
  /nix/store/mrsxpb8971a2zcznb1vn4jhbplavsq2z-nix-grpc-store-0.2.2.drv
  /nix/store/k0q8fmy8dxgf02sn1wb25p7adkfrlkmp-nix-grpc-store-dispatcher.drv