these 2 derivations will be built:
  /nix/store/dv7ydm69398q8xvl429qxncmqg4pcacf-nix-grpc-store-0.2.3.drv
  /nix/store/rgj3cxh9dk89z752ishv197k34477gnz-nix-grpc-store-exit-stress.drv