these 2 derivations will be built:
  /nix/store/d44am3s5iqjk94yrqmg3g7n2d1b61rfq-nix-grpc-store-0.1.0.drv
  /nix/store/yxrq0cic7cszlw306alk5a2rgsaxslpv-nix-grpc-store-exit-stress.drv