> Other than that, it looks OK (in the nitpick area, I'd move the code to
> its own function and then call it from `elpaa-batch-make-all-packages`).

Done.

> I like the `.eld` extension, and I guess "elpa-packages.eld" is as good
> a name as any.
>
>> It currently makes the assumption that :core is the first element in the
>> property list for each package specification.
>
> That's right: that element should be either `:core` or `:url`.

Great.