pymergetic-cppdantic 0.0.10

Hello-world nanobind extension built against pymergetic.easybind (import pymergetic.cppdantic)

cppdantic

Small demo that builds against pymergetic.easybind from PyPI (pymergetic-easybind). PyPI distribution: pymergetic-cppdantic. Import: pymergetic.cppdantic. The repo directory stays packages/cppdantic/ in the os-sdk monorepo.

PyPI: pymergetic-cppdantic (when published). Versioning and tags: RELEASING.md.

Platforms: CI publishes manylinux and Windows amd64 wheels (CPython 3.11–3.14). Install with pip install pymergetic-cppdantic on those platforms once wheels exist for your release.

Bumping pymergetic-easybind~=…: pymergetic-pin-pyproject --project-root . (from pymergetic-common devtools on PyPI). Default = latest v* tag on GitHub. Use --from-pypi for PyPI’s published latest instead — see RELEASING.md.

Build / test

You need pymergetic-easybind installed (matching the pin in pyproject.toml), plus CMake ≥ 3.25, Ninja, and a C++20 compiler on PATH:

python -m pip install -U pip
python -m pip install "pymergetic-easybind~=0.2.15"   # align with pyproject.toml
python -m pip install -e '.[test]'
python -m pytest tests -q

CMake loads easybind/cmake/easybind_pip.cmake from the installed pymergetic.easybind package. PyPI must ship the cmake/ tree for the version you pin.

os-sdk workspace (editable easybind)

From the os-sdk repo root:

uv sync
python -m pytest packages/cppdantic/tests -q

Or install only pymergetic-cppdantic after syncing pymergetic-common[easybind] in a venv with editable easybind (standalone checkout).

uv

From the cppdantic repo root:

uv pip install "pymergetic-easybind~=0.2.15"
uv pip install -e ".[test]"

(pyproject.toml sets [tool.uv] no-build-isolation-package = ["pymergetic-cppdantic"] so editable builds use your venv.)

If uv pip install fails with Metadata mismatch in METADATA (setuptools-scm version differs between build phases), clear stale artifacts and install pymergetic-easybind first, then pymergetic-cppdantic:

rm -rf build dist *.egg-info src/pymergetic/cppdantic/*.egg-info
uv pip install -e ../easybind    # monorepo sibling, or pymergetic-easybind from PyPI
uv pip install -e ".[test]"

Ensure src/pymergetic/cppdantic/_version.py is not tracked by git (it is gitignored).

Tagging

Create an annotated v* tag on main after your pins commit (see RELEASING.md).