these 2 derivations will be built:
  /nix/store/lcyh72wzgf260pxsqgb8wqa7r9k7kkc0-nix-grpc-store-0.2.3.drv
  /nix/store/z3jqfz30fpixyhnr2m0zw7k0k230n2sn-nix-grpc-store-dispatcher.drv