these 2 derivations will be built:
  /nix/store/dcb1yb0z7c9v9dxig9jl455xnfsn9rrd-nix-grpc-store-0.1.0.drv
  /nix/store/8g2gq94984d94wg80brrafj0ph9kyzcb-nix-grpc-store-dispatcher.drv