these 2 derivations will be built:
  /nix/store/znkpw02a2akm3nsqxsc7gzhfd9sjb5im-nix-grpc-store-0.2.0.drv
  /nix/store/1icb4jvvygqly78bb5mm6kacj5wkf6z5-nix-grpc-store-dispatcher.drv