these 2 derivations will be built:
  /nix/store/hznjfwxqyqyxarrrp0rwcgv4vj8vw1l9-nix-grpc-store-0.1.0-beta.1.drv
  /nix/store/vy7p5ksivvxiiql3cl3brpmgb0ywfyq1-nix-grpc-store-dispatcher.drv