these 2 derivations will be built:
  /nix/store/wqjwynjpzq932497czlz6ndmvrd9xlkp-nix-grpc-store-0.1.0.drv
  /nix/store/cgq6hkypvi05nkspqjzxql08dslag31a-nix-grpc-store-exit-stress.drv