these 2 derivations will be built:
  /nix/store/06iqaz8fyfkx0shrdalld71vf7rf57wm-nix-grpc-store-0.2.3.drv
  /nix/store/yyp7f5f9dhsf51x8nyk0krymgl2ck99h-nix-grpc-store-dispatcher.drv