Python-C++ Bindings Meeting

Tuesday 20 Jan 2026, 16:00 → 17:00 Europe/Zurich

Aaron Jomy (CERN)

Discussion on developments in Python-C++ bindings surrounding the Cppyy project, and broader interactive C++ as a service based on the CppInterOp project.

Python-C++ Bindings Projects for 2026

Migration Status

Linux + Clang-Repl 21 + Python 3.14	518 passed, 18 skipped, 9 xfailed (total 545)
Linux + Cling1.2 + Python3.14	501 passed, 18 skipped, 26 xfailed (total 545)

 

Note that among the 18 skipped tests, 16 tests are numba based tests. We need to pin numba version to 0.61.2, and this version of numba is not compatible with Python3.14. Out of the 16 numba test, 15 of them pass.

This is taken from my local (Vipul Cariappa) system with cppyy#164 & cppyy-backend#163.

Python-C++ Bindings Projects for 2026

This document collects open problems and missing features that might be of common interest, so that we can coordinate their development without duplicate work.

https://docs.google.com/document/d/1XyxIDr1gxeMez8t4AUlc3Jb8CLguF5rN9gx07XbxeAc/edit?usp=sharing

16:00 → 16:30 Round Table

16:30 → 17:00 AOB