these 2 derivations will be built:
  /nix/store/b2iq5bndzmd1akp2r7kjybmd177ay67h-nix-grpc-store-0.2.3.drv
  /nix/store/mflfk5zljin4f2fycyzybld72fjydcby-nix-grpc-store-dispatcher.drv