these 2 derivations will be built:
  /nix/store/zlibmvk30q2mdxibnf785yapigcw4h6p-nix-grpc-store-0.1.0.drv
  /nix/store/smx9rlslr2832q795j4jjdbnmc4lnh5m-nix-grpc-store-exit-stress.drv