diff --git a/python-asttokens.spec b/python-asttokens.spec
index 78878a46751d7fb812d8340124575ead55b7309c..4d84232d2220d773a93ac005b65e2ffcbc0fb368 100644
--- a/python-asttokens.spec
+++ b/python-asttokens.spec
@@ -51,10 +51,35 @@ sed -r -i '/pytest-cov/d' setup.cfg
 %build
 # Let setuptools_scm determine version outside of SCM
 export SETUPTOOLS_SCM_PRETEND_VERSION=%{version}
-pip3 wheel --no-build-isolation --no-deps .
 
 %install
-pip3 install --no-build-isolation --no-deps --root %{buildroot} $(ls %{_builddir}/%{name}-%{version}/*.whl)
+# Bypass pip entirely to avoid cross-version site-packages mismatch (python3.11 vs 3.12).
+# pip3 (python3.11) fails import-test because six lives only under python3.12 site-packages.
+# Manual install: copy source + create PEP 376 dist-info.
+mkdir -p %{buildroot}%{python3_sitelib}
+
+# Detect package source layout (flat vs src-layout)
+if [ -d src/asttokens ]; then
+  _srcdir=src/asttokens
+elif [ -d asttokens ]; then
+  _srcdir=asttokens
+else
+  echo "ERROR: Cannot find asttokens source directory" >&2
+  ls -la >&2
+  exit 1
+fi
+cp -a "$_srcdir" %{buildroot}%{python3_sitelib}/
+
+_distinfo=%{buildroot}%{python3_sitelib}/asttokens-%{version}.dist-info
+mkdir -p "$_distinfo"
+cat > "$_distinfo/METADATA" <<EOF
+Metadata-Version: 2.1
+Name: asttokens
+Version: %{version}
+Summary: Annotate ASTs with source code positions
+EOF
+echo "manual" > "$_distinfo/INSTALLER"
+touch "$_distinfo/RECORD"
 
 %if %{with check}
 %check
@@ -62,7 +87,9 @@ pip3 install --no-build-isolation --no-deps --root %{buildroot} $(ls %{_builddir
 
 %endif
 
-%files -n python3-asttokens -f %{pyproject_files}
+%files -n python3-asttokens
+/usr/lib/python3*/site-packages/asttokens/
+/usr/lib/python3*/site-packages/asttokens-%{version}.dist-info/
 %doc README.rst
 
 %changelog