these 2 derivations will be built:
  /nix/store/pavjry23ch8f69hyq6dl88jy8ndyk2ga-nix-grpc-store-0.2.3.drv
  /nix/store/lcqg50smxdcg1ccy15alz9qkxijriynx-nix-grpc-store-exit-stress.drv