these 2 derivations will be built:
  /nix/store/8craxfr0kf53kycfnag3g7aavyjdmjjb-nix-grpc-store-0.1.0-beta.4.drv
  /nix/store/mhsrnryx437i1k6ng3s82557iihdvx5s-nix-grpc-store-exit-stress.drv