these 2 derivations will be built:
  /nix/store/ma26l8a53q6as2pf3qifxbfwmhbpqfvm-nix-grpc-store-0.1.0.drv
  /nix/store/5f2al6ij53pmdvk4xplp65jcc5m29jxa-nix-grpc-store-exit-stress.drv