Explicitly opt-out from Python name-based provides and obsoletes generators

In Koji, python3-rpm-generators are not installed during the build.
However, packagers can have them installed locally, in mock or in Copr.
This way, we make sure the automatic provides (and obsoletes)
do not magically appear only in some environments.

Since python3-rpm-macros actually requires python-rpm-macros,
the requirement is self-satisfied when the automatic provides are generated.

python-rpm-macros.spec

@@ -49,7 +49,7 @@ elseif posix.stat('macros.python-srpm') then
 end
 }
 Version:        %{__default_python3_version}
-Release:        15%{?dist}
+Release:        16%{?dist}
 
 BuildArch:      noarch
 
@@ -58,6 +58,12 @@ BuildArch:      noarch
 # For compileall2.py
 Requires:       python-srpm-macros = %{version}-%{release}
 
+# The packages are called python(3)-(s)rpm-macros
+# We never want python3-rpm-macros to provide python-rpm-macros
+# We opt out from all Python name-based automatic provides and obsoletes
+%undefine __pythonname_provides
+%undefine __pythonname_obsoletes
+
 %description
 This package contains the unversioned Python RPM macros, that most
 implementations should rely on.
@@ -145,6 +151,9 @@ install -m 755 brp-* %{buildroot}%{_rpmconfigdir}/redhat/
 
 
 %changelog
+* Mon Jan 31 2022 Miro Hrončok <mhroncok@redhat.com> - 3.10-16
+- Explicitly opt-out from Python name-based provides and obsoletes generators
+
 * Tue Dec 21 2021 Tomas Orsava <torsava@redhat.com> - 3.10-15
 - Add lua helper functions to make it possible to automatically generate
   Obsoletes tags