these 2 derivations will be built:
  /nix/store/a8wl0bamkfsjay19xa4v53swdr2pw5g7-nix-grpc-store-0.1.0-beta.3.drv
  /nix/store/7yl9w8hax7y0pm7qf3yp8573984i25ss-nix-grpc-store-exit-stress.drv