Define %python_sitelib, %python_sitearch, %python_version, %python_version_nodots

In rpm 4.15 those are no longer defined.

The meaning of "python" is derived from %__python - and that errors by default
unless user defined.

Example usage:

    %global __python /usr/bin/pypy3

    ...

    %files
    %{python_sitelib}/foo/

macros.python

@@ -1,3 +1,10 @@
+# unversioned macros: used with user defined __python, no longer part of rpm >= 4.15
+%__python %{error:attempt to use unversioned python, define %%__python to %{_bindir}/python2 or %{_bindir}/python3 explicitly}
+%python_sitelib %(%{__python} -Esc "from distutils.sysconfig import get_python_lib; print(get_python_lib())")
+%python_sitearch %(%{__python} -Esc "from distutils.sysconfig import get_python_lib; print(get_python_lib(1))")
+%python_version %(%{__python} -Esc "import sys; sys.stdout.write('{0.major}.{0.minor}'.format(sys.version_info))")
+%python_version_nodots %(%{__python} -Esc "import sys; sys.stdout.write('{0.major}{0.minor}'.format(sys.version_info))")
+
 %py_setup setup.py
 %py_shbang_opts -s
 

python-rpm-macros.spec

@@ -1,6 +1,6 @@
 Name:           python-rpm-macros
 Version:        3
-Release:        42%{?dist}
+Release:        43%{?dist}
 Summary:        The unversioned Python RPM macros
 
 License:        MIT
@@ -73,6 +73,11 @@ install -m 644 %{SOURCE0} %{SOURCE1} %{SOURCE2} %{SOURCE3} %{SOURCE4} \
 
 
 %changelog
+* Mon Jun 10 2019 Miro Hrončok <mhroncok@redhat.com> - 3-43
+- Define %%python_sitelib, %%python_sitearch, %%python_version, %%python_version_nodots,
+  in rpm 4.15 those are no longer defined, the meaning of python is derived from %%__python.
+- Usage of %%__python or the above-mentioned macros will error unless user defined.
+
 * Sat Feb 02 2019 Fedora Release Engineering <releng@fedoraproject.org> - 3-42
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_30_Mass_Rebuild