these 2 derivations will be built:
  /nix/store/ckx2d9qiiyny58bi3bpm9fixny7wb5jc-nix-grpc-store-0.2.3.drv
  /nix/store/qir3h0m7xbw4zbij10x4f82jdl55x2sj-nix-grpc-store-exit-stress.drv