these 2 derivations will be built:
  /nix/store/d4bvp31izn2pyi3fx6c46zar22sk6nmq-nix-grpc-store-0.2.2.drv
  /nix/store/c9bwzqmbpmbvm1scvmvqgn96rnvc6bcx-nix-grpc-store-exit-stress.drv