these 2 derivations will be built:
  /nix/store/9k33dbvy5kpbb2gxipxln31kxyjyix2a-nix-grpc-store-0.2.3.drv
  /nix/store/w2ka2dg3f8bya5084xdnza7br6sri5n7-nix-grpc-store-dispatcher.drv