these 2 derivations will be built:
  /nix/store/dngk3n5nxjdhpsk9gmdb5mac0w9q8wcw-rate4site-3.0.0.orig.tar.gz.drv
  /nix/store/zsyw491lmqfprpcplwkyvdhq3c9w1dw7-rate4site-3.0.0.drv