> It does not matter if the config process uses pkgconfig or not. 
> Depending on the package name is not a way to state you're not using
> pkgconfig, it's a way to get broken builds when the package you depend
> on gets restructured.

Then the docs should be strengthened to state the case from the perspective of the provider
of the .pc and not the consumer of it:

Current:

"Fedora packages which use pkg-config to build against a library (e.g. 'foo') on which they depend, 
 SHOULD express their build dependency correctly as pkgconfig(foo)."

becomes:

"Build dependencies on Fedora packages which provide pkg-config files SHOULD be expressed
 as pkgconfig(foo) and not foo-devel, whether the dependent package uses pkg-config or not."