these 2 derivations will be built:
  /nix/store/93msxvss877921vh4fzbbznv09cbysyx-nix-grpc-store-0.2.2.drv
  /nix/store/sldnr1w4fwnn1idzmp6p2yma7b6ijzyd-nix-grpc-store-dispatcher.drv