Jarod Wilson wrote:
The minimalist approach that comes to mind is to make all the %define
build* bits all set to 1/enabled by default, and only flip them to
disabled where appropriate, so they'd be equivalent to your allow* idea,
in that if you disable them at the top of the spec, they'd stay disabled.
I like this; right now there are surprises there for the unwary who
think they can disable things that way.