these 2 derivations will be built:
  /nix/store/6bcxh8klkzsnr7y3pxw552brmn1h0sss-nix-grpc-store-0.2.3.drv
  /nix/store/c3afzl0mxhkah6xix5xgcbf3n6wghhya-nix-grpc-store-dispatcher.drv