these 2 derivations will be built:
  /nix/store/w7kc6qzzxv575786nnpgy0vcv9yx4qhg-nix-grpc-store-0.2.0.drv
  /nix/store/nnsx9r5ywgdpydx4hgmd14i7qzhm842p-nix-grpc-store-exit-stress.drv