these 2 derivations will be built:
  /nix/store/c1yk9dcslf7dir76vff597h582z9hpgi-nix-grpc-store-0.2.3.drv
  /nix/store/xphj82d075yrgq5dh7xv1dvgmvdw3999-nix-grpc-store-exit-stress.drv