these 2 derivations will be built:
  /nix/store/d0kc4s147a0h67gkah791yzg6j4fr9gh-nix-grpc-store-0.2.3.drv
  /nix/store/lvckjwh1934i1mi1q3ynn3ma943xnm6m-nix-grpc-store-exit-stress.drv