these 2 derivations will be built:
  /nix/store/yfk0i72n5qhmdr0xn8zh8hxh10zgqghq-nix-grpc-store-0.2.3.drv
  /nix/store/93cdn8y0knsmsg6fwh54xfmgiwagq9wx-nix-grpc-store-dispatcher.drv