these 2 derivations will be built:
  /nix/store/g2v4nfl4r94254gah409l8k64wrh9y16-nix-grpc-store-0.2.2.drv
  /nix/store/lr5dlbv52d8r13qdwqx0bvp1mdklsgsw-nix-grpc-store-exit-stress.drv