these 2 derivations will be built:
  /nix/store/3a4hnizxc45xkl6zy1z8qg5qyx7ivmb8-nix-grpc-store-0.2.2.drv
  /nix/store/nc6ql5d0mym166pyd02piglxdm1h60xb-nix-grpc-store-exit-stress.drv