these 2 derivations will be built:
  /nix/store/ajp3liz7qjmh8ld1qqfv295m32h7yhfq-nix-grpc-store-0.1.0.drv
  /nix/store/9sfqkb9r6p3f6vnxx06aywjhw19my5z8-nix-grpc-store-exit-stress.drv