these 2 derivations will be built:
  /nix/store/766jpgnlpznqnbjgmzycmrqj8blrmzww-nix-grpc-store-0.2.0.drv
  /nix/store/llf7070h2igpgm0gc2v0w6nnhgllhw2n-nix-grpc-store-exit-stress.drv