these 2 derivations will be built:
  /nix/store/7dd6m1lracycv9cxn43m0c6f7qym7d4g-nix-grpc-store-0.2.3.drv
  /nix/store/n13rap2173mjya901bay3wc617gnx8cr-nix-grpc-store-dispatcher.drv