these 2 derivations will be built:
  /nix/store/kf5p9pd0n87n3ifqnarjyl5h0s2wwwxd-nix-grpc-store-0.2.0.drv
  /nix/store/fjji1zjvvqvjfs8ybvx1k5w9i1g6l9ay-nix-grpc-store-exit-stress.drv