these 2 derivations will be built:
  /nix/store/gydfxbm3cyakh7wn21wj73kv2gd50qzk-nix-grpc-store-0.1.0.drv
  /nix/store/n3kv70cr78fv5cal31g8r8xswyvba08x-nix-grpc-store-exit-stress.drv