v0.3.6 per changelog

Author: networmix

.github/workflows/release.yml

@@ -62,13 +62,17 @@ jobs:
           path: dist/*.tar.gz
 
   test_wheels_centos_stream_9:
-    name: Test wheels (CentOS Stream 9)
+    name: Test wheels (CentOS Stream 9, py${{ matrix.python-version }})
     needs: [build_wheels]
     runs-on: ubuntu-latest
     container: quay.io/centos/centos:stream9
+    strategy:
+      fail-fast: false
+      matrix:
+        python-version: ["3.11", "3.12"]
     steps:
       - name: Install Python
-        run: dnf install -y python3.11 python3.11-pip
+        run: dnf install -y python${{ matrix.python-version }} python${{ matrix.python-version }}-pip
 
       - uses: actions/download-artifact@v4
         with:
@@ -78,9 +82,9 @@ jobs:
 
       - name: Install and test wheel
         run: |
-          python3.11 -m pip install --upgrade pip
-          python3.11 -m pip install netgraph-core --find-links wheelhouse/
-          python3.11 -c "import netgraph_core; print('CentOS Stream 9:', netgraph_core.__version__)"
+          python${{ matrix.python-version }} -m pip install --upgrade pip
+          python${{ matrix.python-version }} -m pip install netgraph-core --find-links wheelhouse/
+          python${{ matrix.python-version }} -c "import netgraph_core; print('CentOS Stream 9:', netgraph_core.__version__)"
 
   publish_pypi:
     name: Publish to PyPI

.github/workflows/tests.yml

@@ -52,7 +52,7 @@ jobs:
           python${{ matrix.python-version }} -m pip install -U pip wheel
           python${{ matrix.python-version }} -m pip install -e .[dev]
 
-      - name: Run CI checks
+      - name: Run CI checks (lint + C++/Python tests)
         run: PYTHON=python${{ matrix.python-version }} make check-ci
 
   coverage:

CHANGELOG.md

@@ -5,6 +5,16 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [0.3.6] - 2026-02-17
+
+### Fixed
+
+- **Python Bindings**: Fix build failure with pybind11 3.x typed tuples by adding explicit `-> py::tuple` return type on the `spf` lambda.
+
+### Changed
+
+- **CI**: Add CentOS Stream 9 build and test jobs.
+
 ## [0.3.5] - 2026-02-08
 
 ### Fixed

bindings/python/module.cpp

@@ -189,7 +189,7 @@ PYBIND11_MODULE(_netgraph_core, m) {
       }, py::arg("num_nodes"), py::arg("src"), py::arg("dst"), py::arg("capacity"), py::arg("cost"), py::arg("ext_edge_ids"))
       .def("spf", [](const Algorithms& algs, const PyGraph& pg, std::int32_t src,
                        py::object dst, py::object selection_obj, py::object residual_obj,
-                       py::object node_mask, py::object edge_mask, bool multipath, std::string dtype){
+                       py::object node_mask, py::object edge_mask, bool multipath, std::string dtype) -> py::tuple {
         if (src < 0 || src >= pg.num_nodes) throw py::value_error("src out of range");
         SpfOptions opts; if (!selection_obj.is_none()) opts.selection = py::cast<EdgeSelection>(selection_obj);
         if (!dst.is_none()) { auto d = py::cast<std::int32_t>(dst); if (d < 0 || d >= pg.num_nodes) throw py::value_error("dst out of range"); opts.dst = static_cast<NodeId>(d); }

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "scikit_build_core.build"
 
 [project]
 name = "netgraph-core"
-version = "0.3.5"
+version = "0.3.6"
 description = "C++ implementation of graph algorithms for network flow analysis and traffic engineering with Python bindings"
 readme = "README.md"
 requires-python = ">=3.11"