these 2 derivations will be built:
  /nix/store/lziiz1gafx2543jf1mbc887qvkkcwcqp-nix-grpc-store-0.1.0.drv
  /nix/store/5p46912q6xs0hfi8737rngbfphmwsnjd-nix-grpc-store-exit-stress.drv