these 2 derivations will be built:
  /nix/store/ww6y314lrw470pxprycrp0fv8p2blk5l-nix-grpc-store-0.2.3.drv
  /nix/store/8hixp9fsp6xy2c0g6qrak48fpyxfvvvl-nix-grpc-store-dispatcher.drv