This is a second attempt at unifying the generic and manual-config
kernel builds (see #412 for the last time).
The set of working kernel packages is a superset of those that work on
master, and as the only objection last time was the size of the $dev
closure and now both $out and $dev combined are 20M smaller than $out on
master (see message for ac2035287fbec30d92165fd3839d1bf71b8edd47), this
should be unobjectionable.
Signed-off-by: Shea Levy <shea@shealevy.com>
139f8949e6