these 2 derivations will be built:
  /nix/store/80yjf2n9cwn322hb8f01j1ypam92j388-nix-grpc-store-0.1.0.drv
  /nix/store/n6anfad3s70cxq455dk8rmyzvbakr17g-nix-grpc-store-exit-stress.drv