these 2 derivations will be built:
  /nix/store/sdizjb6p9x5xrjsgdarzhqxvjk2dlysi-nix-grpc-store-0.1.0.drv
  /nix/store/pp4xpyzzyzjm3y0msirkv25nb3y88z0r-nix-grpc-store-dispatcher.drv