these 2 derivations will be built:
  /nix/store/a9knxcb2n2gibzcl8k65j8yyh00gfgg5-nix-grpc-store-0.2.3.drv
  /nix/store/37qfk9lx9yksr1qhrjsv4vrai364r6nq-nix-grpc-store-dispatcher.drv