these 2 derivations will be built:
  /nix/store/pcf1nsll71p3drhpkm3snwgqmbq57z25-nix-grpc-store-0.2.3.drv
  /nix/store/r898qj9baq64yi72z3rjqllphc06wlyn-nix-grpc-store-dispatcher.drv