diff --git a/macros.python b/macros.python
index b45c985..4568614 100644
--- a/macros.python
+++ b/macros.python
@@ -3,18 +3,18 @@
 # nb: $RPM_BUILD_ROOT is not set when the macros are expanded (at spec parse time)
 #     so we set it manually (to empty string), making our Python prefer the correct install scheme location
 # platbase/base is explicitly set to %%{_prefix} to support custom values, such as /app for flatpaks
-%python_sitelib %(RPM_BUILD_ROOT= %{__python} -Esc "import sysconfig; print(sysconfig.get_path('purelib', vars={'platbase': '%{_prefix}', 'base': '%{_prefix}'}))")
-%python_sitearch %(RPM_BUILD_ROOT= %{__python} -Esc "import sysconfig; print(sysconfig.get_path('platlib', vars={'platbase': '%{_prefix}', 'base': '%{_prefix}'}))")
-%python_version %(RPM_BUILD_ROOT= %{__python} -Esc "import sys; sys.stdout.write('{0.major}.{0.minor}'.format(sys.version_info))")
-%python_version_nodots %(RPM_BUILD_ROOT= %{__python} -Esc "import sys; sys.stdout.write('{0.major}{0.minor}'.format(sys.version_info))")
-%python_platform %(RPM_BUILD_ROOT= %{__python} -Esc "import sysconfig; print(sysconfig.get_platform())")
-%python_platform_triplet %(RPM_BUILD_ROOT= %{__python} -Esc "import sysconfig; print(sysconfig.get_config_var('MULTIARCH'))")
-%python_ext_suffix %(RPM_BUILD_ROOT= %{__python} -Esc "import sysconfig; print(sysconfig.get_config_var('EXT_SUFFIX'))")
-%python_cache_tag %(RPM_BUILD_ROOT= %{__python} -Esc "import sys; print(sys.implementation.cache_tag)")
+%python_sitelib %{global python_sitelib %(RPM_BUILD_ROOT= %{__python} -Esc "import sysconfig; print(sysconfig.get_path('purelib', vars={'platbase': '%{_prefix}', 'base': '%{_prefix}'}))")}%{python_sitelib}
+%python_sitearch %{global python_sitearch %(RPM_BUILD_ROOT= %{__python} -Esc "import sysconfig; print(sysconfig.get_path('platlib', vars={'platbase': '%{_prefix}', 'base': '%{_prefix}'}))")}%{python_sitearch}
+%python_version %{global python_version %(RPM_BUILD_ROOT= %{__python} -Esc "import sys; sys.stdout.write('{0.major}.{0.minor}'.format(sys.version_info))")}%{python_version}
+%python_version_nodots %{global python_version_nodots %(RPM_BUILD_ROOT= %{__python} -Esc "import sys; sys.stdout.write('{0.major}{0.minor}'.format(sys.version_info))")}%{python_version_nodots}
+%python_platform %{global python_platform %(RPM_BUILD_ROOT= %{__python} -Esc "import sysconfig; print(sysconfig.get_platform())")}%{python_platform}
+%python_platform_triplet %{global python_platform_triplet %(RPM_BUILD_ROOT= %{__python} -Esc "import sysconfig; print(sysconfig.get_config_var('MULTIARCH'))")}%{python_platform_triplet}
+%python_ext_suffix %{global python_ext_suffix %(RPM_BUILD_ROOT= %{__python} -Esc "import sysconfig; print(sysconfig.get_config_var('EXT_SUFFIX'))")}%{python_ext_suffix}
+%python_cache_tag %{global python_cache_tag %(RPM_BUILD_ROOT= %{__python} -Esc "import sys; print(sys.implementation.cache_tag)")}%{python_cache_tag}
 
 %py_setup setup.py
 %_py_shebang_s s
-%_py_shebang_P %(RPM_BUILD_ROOT= %{__python} -Esc "import sys; print('P' if hasattr(sys.flags, 'safe_path') else '')")
+%_py_shebang_P %{global _py_shebang_P %(RPM_BUILD_ROOT= %{__python} -Esc "import sys; print('P' if hasattr(sys.flags, 'safe_path') else '')")}%{_py_shebang_P}
 %py_shbang_opts -%{?_py_shebang_s}%{?_py_shebang_P}
 %py_shbang_opts_nodash %(opts=%{py_shbang_opts}; echo ${opts#-})
 %py_shebang_flags %(opts=%{py_shbang_opts}; echo ${opts#-})
diff --git a/macros.python3 b/macros.python3
index 6aa541b..0e4678e 100644
--- a/macros.python3
+++ b/macros.python3
@@ -1,18 +1,18 @@
 # nb: $RPM_BUILD_ROOT is not set when the macros are expanded (at spec parse time)
 #     so we set it manually (to empty string), making our Python prefer the correct install scheme location
 # platbase/base is explicitly set to %%{_prefix} to support custom values, such as /app for flatpaks
-%python3_sitelib %(RPM_BUILD_ROOT= %{__python3} -Ic "import sysconfig; print(sysconfig.get_path('purelib', vars={'platbase': '%{_prefix}', 'base': '%{_prefix}'}))")
+%python3_sitelib %{global python3_sitelib %(RPM_BUILD_ROOT= %{__python3} -Ic "import sysconfig; print(sysconfig.get_path('purelib', vars={'platbase': '%{_prefix}', 'base': '%{_prefix}'}))")}%{python3_sitelib}
 %python3_sitearch %(RPM_BUILD_ROOT= %{__python3} -Ic "import sysconfig; print(sysconfig.get_path('platlib', vars={'platbase': '%{_prefix}', 'base': '%{_prefix}'}))")
-%python3_version %(RPM_BUILD_ROOT= %{__python3} -Ic "import sys; sys.stdout.write('{0.major}.{0.minor}'.format(sys.version_info))")
-%python3_version_nodots %(RPM_BUILD_ROOT= %{__python3} -Ic "import sys; sys.stdout.write('{0.major}{0.minor}'.format(sys.version_info))")
-%python3_platform %(RPM_BUILD_ROOT= %{__python3} -Ic "import sysconfig; print(sysconfig.get_platform())")
-%python3_platform_triplet %(RPM_BUILD_ROOT= %{__python3} -Ic "import sysconfig; print(sysconfig.get_config_var('MULTIARCH'))")
-%python3_ext_suffix %(RPM_BUILD_ROOT= %{__python3} -Ic "import sysconfig; print(sysconfig.get_config_var('EXT_SUFFIX'))")
-%python3_cache_tag %(RPM_BUILD_ROOT= %{__python3} -Ic "import sys; print(sys.implementation.cache_tag)")
+%python3_version %{global python3_version %(RPM_BUILD_ROOT= %{__python3} -Ic "import sys; sys.stdout.write('{0.major}.{0.minor}'.format(sys.version_info))")}%{python3_version}
+%python3_version_nodots %{global python3_version_nodots %(RPM_BUILD_ROOT= %{__python3} -Ic "import sys; sys.stdout.write('{0.major}{0.minor}'.format(sys.version_info))")}%{python3_version_nodots}
+%python3_platform %{global python3_platform %(RPM_BUILD_ROOT= %{__python3} -Ic "import sysconfig; print(sysconfig.get_platform())")}%{python3_platform}
+%python3_platform_triplet %{global python3_platform_triplet %(RPM_BUILD_ROOT= %{__python3} -Ic "import sysconfig; print(sysconfig.get_config_var('MULTIARCH'))")}%{python3_platform_triplet}
+%python3_ext_suffix %{global python3_ext_suffix %(RPM_BUILD_ROOT= %{__python3} -Ic "import sysconfig; print(sysconfig.get_config_var('EXT_SUFFIX'))")}%{python3_ext_suffix}
+%python3_cache_tag %{global python3_cache_tag %(RPM_BUILD_ROOT= %{__python3} -Ic "import sys; print(sys.implementation.cache_tag)")}%{python3_cache_tag}
 %py3dir %{_builddir}/python3-%{name}-%{version}-%{release}
 
 %_py3_shebang_s s
-%_py3_shebang_P %(RPM_BUILD_ROOT= %{__python3} -Ic "import sys; print('P' if hasattr(sys.flags, 'safe_path') else '')")
+%_py3_shebang_P %{global _py3_shebang_P %(RPM_BUILD_ROOT= %{__python3} -Ic "import sys; print('P' if hasattr(sys.flags, 'safe_path') else '')")}%{_py3_shebang_P}
 %py3_shbang_opts -%{?_py3_shebang_s}%{?_py3_shebang_P}
 %py3_shbang_opts_nodash %(opts=%{py3_shbang_opts}; echo ${opts#-})
 %py3_shebang_flags %(opts=%{py3_shbang_opts}; echo ${opts#-})
diff --git a/python-rpm-macros.spec b/python-rpm-macros.spec
index 58a7704..abf5ba1 100644
--- a/python-rpm-macros.spec
+++ b/python-rpm-macros.spec
@@ -53,7 +53,7 @@ elseif posix.stat('macros.python-srpm') then
 end
 }
 Version:        %{__default_python3_version}
-Release:        8%{?dist}
+Release:        9%{?dist}
 
 BuildArch:      noarch
 
@@ -163,6 +163,10 @@ grep -E '^#[^%%]*%%[^%%]' %{buildroot}%{rpmmacrodir}/macros.* && exit 1 || true
 
 
 %changelog
+* Fri Jan 20 2023 Miro Hrončok <mhroncok@redhat.com> - 3.11-9
+- Memoize values of macros that execute python to get their value
+- Fixes: rhbz#2155505
+
 * Fri Jan 20 2023 Fedora Release Engineering <releng@fedoraproject.org> - 3.11-8
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild
 
diff --git a/tests/test_evals.py b/tests/test_evals.py
index 96ac705..294faaa 100644
--- a/tests/test_evals.py
+++ b/tests/test_evals.py
@@ -720,8 +720,18 @@ unversioned_macros = pytest.mark.parametrize('macro', [
 @unversioned_macros
 def test_unversioned_python_errors(macro):
     lines = rpm_eval(macro, fails=True)
-    assert lines == ['error: attempt to use unversioned python, '
-                     'define %__python to /usr/bin/python2 or /usr/bin/python3 explicitly']
+    assert lines[0] == (
+        'error: attempt to use unversioned python, '
+        'define %__python to /usr/bin/python2 or /usr/bin/python3 explicitly'
+    )
+    # when the macros are %global, the error is longer
+    # we deliberately allow this extra line to be optional
+    if len(lines) > 1:
+        # the failed macro is not unnecessarily our tested macro
+        pattern = r'error: Macro %\S+ failed to expand'
+        assert re.match(pattern, lines[1])
+    # but there should be no more lines
+    assert len(lines) < 3
 
 
 @unversioned_macros