these 2 derivations will be built:
  /nix/store/b5sjvhz6xxg6md2pwc4ipgc8bx8nc9gl-nix-grpc-store-0.1.0.drv
  /nix/store/xac839n7k0kw6n7ybbdr51j84anppzf2-nix-grpc-store-exit-stress.drv