On 12/3/20 10:06 PM, Andrew C Aitchison wrote:

Is %generate_buildrequires suppose to work for packages which do not used python ?

Yes, see https://fedoraproject.org/wiki/Changes/DynamicBuildRequires

From the name I would expect it to, but reading that doc makes me think %generate_buildrequires *is* python specific. If so, the name is misleading.

When you read the docs at https://src.fedoraproject.org/rpms/pyproject-rpm-macros that is indeed Python specific. It describes the following:

%generate_buildrequires %pyproject_buildrequires

But you can heve many other things, e.g.:

%generate_buildrequires echo fruit-cake

Or:

%generate_buildrequires %cargo_generate_buildrequires

(I am also confused/suspicious of the point of a macro to automate  build requires, except as a step on a path to somewhere else.  If build requirements need to be stated explicitly,  then automating their statement is a good way of hiding an issue  that needs to be reviewed whenever changes are made. )

Indeed, things are less explicit when reading the spec file. OTOH When upstream requirements change, one does not need to update them manually. No more obsolete buildrequires (they tend to happen, really).