these 2 derivations will be built:
  /nix/store/iavzzx09vcyba39di99mmwprm799dmnr-nix-grpc-store-0.2.3.drv
  /nix/store/18dsi4ivgh0sb4lzqdycs9frz9hs56hx-nix-grpc-store-exit-stress.drv