these 2 derivations will be built:
  /nix/store/z3z4p2j1wdkxwqkxsq75dyhhwrfscacf-nix-grpc-store-0.1.0.drv
  /nix/store/xz07579vy7iwlz6n5ns09r3nd5yprwfi-nix-grpc-store-exit-stress.drv