these 2 derivations will be built:
  /nix/store/1wnmi8hqh7cwhsrk8mqw1w5m8zxcm41v-nix-grpc-store-0.1.0.drv
  /nix/store/l5pm3z1kcp3yk75igl1c8kk019vjcqw0-nix-grpc-store-exit-stress.drv