these 2 derivations will be built:
  /nix/store/90b5m0sqm6fhmzlwf4f4h0yna57kh6xb-nix-grpc-store-0.2.3.drv
  /nix/store/lhk9kkchpfcp4vwqd5s6l7v8k8j1m5kf-nix-grpc-store-exit-stress.drv