these 2 derivations will be built:
  /nix/store/kf5r1bjs77bjkmp5400q9w19w2983pyi-nix-grpc-store-0.2.3.drv
  /nix/store/3vs0mp75hgpzqgda3ciacvzd9vcrlzz4-nix-grpc-store-exit-stress.drv