these 2 derivations will be built:
  /nix/store/26flfrb4z4yj4c66g7m6dwp9wg7lff68-nix-grpc-store-0.1.0.drv
  /nix/store/5wbmga8al89rqyl6npp2nnk5b90wdmy0-nix-grpc-store-exit-stress.drv