these 2 derivations will be built:
  /nix/store/fjnrbpzw0dd1zd9kaa2nvjknn2daky89-nix-grpc-store-0.1.0-beta.4.drv
  /nix/store/6g2jy3d354h1wms4clwylps1mz49x1a1-nix-grpc-store-dispatcher.drv