these 2 derivations will be built:
  /nix/store/y7y9i84cjqzspp7c8zfhg1dnc4cp8cld-nix-grpc-store-0.1.0.drv
  /nix/store/qnbf0h0pj1kd2c4pwskvawq2rvg453zp-nix-grpc-store-exit-stress.drv