these 2 derivations will be built:
  /nix/store/g8vxhfjqvkl8zq4104hi5xipf6fcmggm-nix-grpc-store-0.2.2.drv
  /nix/store/d44ydffvnf1jpsyp75wgniz0d32h62y7-nix-grpc-store-exit-stress.drv