Each %files section contains %defattr if rpm < 4.4 : adds nothing if rpm > 4.4

Package use %makeinstall only when... : adds nothing if %makeinstall not is used.

Fully versioned dependency in subpackages...: hide if there are no subpackages

SourceX tarball generation or download is documented:hide if the source is downloaded directly

Large data in /usr/share should live in a noarch subpackage...: makes no sense if base package is noarch.