these 2 derivations will be built:
  /nix/store/05ldakfdgxq7ys27nk9qy5la135xcdhg-nix-grpc-store-0.2.3.drv
  /nix/store/199ai285hb8ghs99kcq720hmkfr13c7g-nix-grpc-store-dispatcher.drv