these 2 derivations will be built:
  /nix/store/8ki053r9f4cslraf1ybb7x24naa2mgqa-nix-grpc-store-0.2.3.drv
  /nix/store/8sjysdyk7zfrcf6q7ajfs0z16w05cs1c-nix-grpc-store-exit-stress.drv