Neal Becker writes:
How can I apply a patch only if the version of a dependency is <
x?
You mean you want to specify the dependency's version in a macro, that you
put into Requires:? If so, just use the macro in your build script, it'll be
expanded, and you can test its value. Bare-bones shell isn't usually
convenient for understanding most kinds of version number formats. You may
need to do something fancy.