these 2 derivations will be built:
  /nix/store/301hpndmdh5lpqmjqk78zaq4n722c21b-nix-grpc-store-0.1.0.drv
  /nix/store/4ck2snmgpzgvgj7iljcnsz360pnq3nf9-nix-grpc-store-exit-stress.drv