these 2 derivations will be built:
  /nix/store/33k7sg4ngl1kys0w3xwigad7dhqrzly6-nix-grpc-store-0.2.2.drv
  /nix/store/59m8q75wfn6v6wclycwralmsjldawj5f-nix-grpc-store-exit-stress.drv