@russellholt I actually think we should opt to use `$.getJSON` instead of `nrj` because we can pass in a callback function, which means `env.ddg_spice_hackage_package_details` can be defined within the current scope rather than using two separate spice callback functions (this is how Amazon now works). Also, I feel that using jQuery over `nrj` makes the code a little easier to understand because we haven't documented nrj, nrc, etc (though perhaps we should?)