these 2 derivations will be built:
  /nix/store/wsf8chj3af46hmylkc957ghkkh9fg9fh-nix-grpc-store-0.1.0.drv
  /nix/store/p4pnxdp7dk1xh6kwnv0a48507cirzlzm-nix-grpc-store-exit-stress.drv