{ lib , callPackage , hyDefinedPythonPackages ? python-packages: [] /* Packages like with python.withPackages */ }: let withPackages = ( python-packages: callPackage ./builder.nix { hyDefinedPythonPackages = python-packages; } ); in (withPackages hyDefinedPythonPackages) // { # Export withPackages function for hy customization inherit withPackages; }