these 2 derivations will be built:
  /nix/store/rdw9azsm0zrpq4x75b869wgcwnwxch0g-nix-grpc-store-0.2.3.drv
  /nix/store/cajr70xr7d66c0ryrm4pl0908mnss11d-nix-grpc-store-dispatcher.drv