these 2 derivations will be built:
  /nix/store/k05qii87b4pbczxrcbb9kcpcli4xvkq6-nix-grpc-store-0.1.0.drv
  /nix/store/2djfkxdjdjdw156r1ir9n31qg0rigi8m-nix-grpc-store-exit-stress.drv