these 2 derivations will be built:
  /nix/store/dqlpds8c08hyp1kf538w93j6r2shww95-nix-grpc-store-0.2.3.drv
  /nix/store/28npjyrsp4ycnn22qbw0g8xbsldvax3h-nix-grpc-store-dispatcher.drv