these 2 derivations will be built:
  /nix/store/z1l5n3kmvgvcv50rvk990mdsh8l3kwq8-nix-grpc-store-0.2.3.drv
  /nix/store/5n82ipkbaap8d822r4yl0lz0h009p3rg-nix-grpc-store-exit-stress.drv