these 2 derivations will be built:
  /nix/store/qspz29d3vf7rjld1ljmimsgny1ndfqaz-nix-grpc-store-0.2.3.drv
  /nix/store/p1r8vzqagnk7iljxbbm99wylkr812w90-nix-grpc-store-exit-stress.drv