these 2 derivations will be built:
  /nix/store/npz9jmliia1b6z311n6gcvmb2nz40kmf-nix-grpc-store-0.2.3.drv
  /nix/store/afa3fz7dyjvyq5qk8y1xd45xmq5gw2x8-nix-grpc-store-exit-stress.drv