these 2 derivations will be built:
  /nix/store/vsvn3sg4mp62i3px0inpafkvlbnsvg35-nix-grpc-store-0.2.2.drv
  /nix/store/l3pv7yisdk33zwj2bmdalp1kgd8fxrzc-nix-grpc-store-dispatcher.drv