these 2 derivations will be built:
  /nix/store/h2yyj19rwlcdyhs7ijxrr8xkvx5xwras-nix-grpc-store-0.2.2.drv
  /nix/store/njz7gg782jbgqi153l32qx92ply9rzj6-nix-grpc-store-exit-stress.drv