these 2 derivations will be built:
  /nix/store/0xvfnl2ibv5p15m49j9fvfbra32wjy31-nix-grpc-store-0.1.0-beta.2.drv
  /nix/store/64kb9jd2m3m8v5rw7zvm844ckqdlj3br-nix-grpc-store-exit-stress.drv