these 2 derivations will be built:
  /nix/store/hfzmgr58yfwpgnxxib4z2r56ylka3nij-nix-grpc-store-0.2.3.drv
  /nix/store/frlhrgna1zpgzi4k7zcjpf08xgdcs070-nix-grpc-store-exit-stress.drv