these 2 derivations will be built:
  /nix/store/rhyk2lxs4qhn0kgg7781rigaagrs8lvz-nix-grpc-store-0.1.0.drv
  /nix/store/hrlkchhmakcdq1avmgzikjgsjb1dxwkb-nix-grpc-store-dispatcher.drv