these 2 derivations will be built:
  /nix/store/2w1kk6wpj17gwrn0vb4ss0f8x4g8lvir-nix-grpc-store-0.2.3.drv
  /nix/store/zv8sp50ni2a3h8k5acmqhimw6ann6gn3-nix-grpc-store-exit-stress.drv