diff --git a/_multibuild b/_multibuild
index fcc7b97..d0dc7ba 100644
--- a/_multibuild
+++ b/_multibuild
@@ -1,3 +1,4 @@
 <multibuild>
   <package>test</package>
+  <package>primary</package>
 </multibuild>
diff --git a/python-packaging.changes b/python-packaging.changes
index 3726171..78ce345 100644
--- a/python-packaging.changes
+++ b/python-packaging.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Fri Jul 15 12:30:44 UTC 2022 - Ben Greiner <code@bnavigator.de>
+
+- Split primary flavor in multibuild for possible inclusion into
+  Ring0
+
 -------------------------------------------------------------------
 Thu Jul 14 13:13:54 UTC 2022 - Ben Greiner <code@bnavigator.de>
 
diff --git a/python-packaging.spec b/python-packaging.spec
index 951da53..4ae41f7 100644
--- a/python-packaging.spec
+++ b/python-packaging.spec
@@ -16,19 +16,42 @@
 #
 
 
-%{?!python_module:%define python_module() python3-%{**}}
-%global flavor @BUILD_FLAVOR@%{nil}
-%if "%{flavor}" == "test"
-%define psuffix -test
-%bcond_without test
+%define modname packaging
+# this must be hardcoded until obs can read it from a prjconf definition
+%if 0%{suse_version} >= 1550
+%define primary_python python310
 %else
-%define psuffix %{nil}
-%bcond_with test
+%define primary_python python3
 %endif
 # in order to avoid rewriting for subpackage generator
 %define mypython python
-%define skip_python2 1
-Name:           python-packaging%{psuffix}
+%global flavor @BUILD_FLAVOR@%{nil}
+%if "%{flavor}" == "primary"
+# this one is built in Ring0
+%define pprefix %{primary_python}
+%define pythons %{primary_python}
+%endif
+%if "%{flavor}" == ""
+# The rest is in Ring1
+%define pprefix python
+%if 0%{suse_version} >= 1550 || 0%{?sle_version} == 150500
+%{expand:%%define skip_%{primary_python} 1}
+BuildRequires:  python3-base >= 3.6
+%else
+# no non-primary python in <=15.4
+ExclusiveArch:  do-not-build
+%define python_module() no-build-without-multibuild-flavor
+%endif
+%endif
+%if "%{flavor}" == "test"
+%define pprefix python
+%define psuffix -test
+%bcond_without test
+%else
+%bcond_with test
+%endif
+%{?!python_module:%define python_module() python3-%{**}}
+Name:           %{pprefix}-packaging%{?psuffix}
 Version:        21.3
 Release:        0
 Summary:        Core utilities for Python packages
@@ -42,9 +65,9 @@ BuildRequires:  %{python_module base}
 BuildRequires:  fdupes
 BuildRequires:  python-rpm-macros
 #!BuildIgnore:  post-build-checks-malwarescan
+#!BuildIgnore:  python3-packaging
 # ! Do not add setuptools build dependency here, so that we can get this into Ring0 !
 # ! Also make sure all runtime dependencies don't require setuptools. !
-Requires:       python-pyparsing >= 2.0.2
 BuildArch:      noarch
 %if %{with test}
 BuildRequires:  %{python_module pretend}
@@ -52,9 +75,14 @@ BuildRequires:  %{python_module pyparsing >= 2.0.2}
 BuildRequires:  %{python_module pytest}
 %endif
 # See boo#1186870, we can't provide ourselves to pythondistdeps.py
-Provides:       %{mypython}%{python_version}dist(packaging) = %{version}-%{release}
+Provides:       %{mypython}%{python_version}dist(%{modname}) = %{version}-%{release}
 %if "%{python_flavor}" == "python3" || "%{python_provides}" == "python3"
-Provides:       %{mypython}3dist(packaging) = %{version}-%{release}
+Provides:       %{mypython}3dist(%{modname}) = %{version}-%{release}
+Provides:       %{mypython}3-%{modname} = %{version}-%{release}
+Obsoletes:      %{mypython}3-%{modname} < %{version}-%{release}
+Requires:       python3-pyparsing >= 2.0.2
+%else
+Requires:       python-pyparsing >= 2.0.2
 %endif
 %python_subpackages