these 2 derivations will be built:
  /nix/store/cqzw2b0i4af3pi5gpqqjh068g39rxxha-nix-grpc-store-0.2.3.drv
  /nix/store/8bkhgszl9hsjbdfabzfq7inzb4jkgrkc-nix-grpc-store-dispatcher.drv