these 2 derivations will be built:
  /nix/store/xm460x3lfg6n7zirrv2wsmfm12q3vzlv-nix-grpc-store-0.2.3.drv
  /nix/store/bqg8d3c4h0rk0iwkzragsclbidj7p2xj-nix-grpc-store-exit-stress.drv