- Export PIP_ROOT_USER_ACTION=ignore to silence root-user warning in manylinux.
- Remove pytest-runner from build-time pip installs; no longer needed after
removing setup_requires.
- Replace direct setup.py invocations with: python -m build --sdist --wheel
- Add comments explaining motivation (setuptools deprecations, build isolation)
and why we drop explicit --plat-name/--python-tag (auditwheel/env handles).
- Ensure the build frontend is present per-interpreter by installing 'build'.
Also add build-backend to pyproject.toml with notes and TODO for full modernization.
Reorganize Python folder: separate Docker/PyPI from CMake/PyBind11 workflows
and implement comprehensive build automation
This commit represents a comprehensive restructuring and enhancement of the
OPM Python build system, addressing maintainability, consistency, and
usability issues through architectural improvements and automation.
FILES CHANGED
=============
Refactored:
- python/Dockerfile -> python/docker/Dockerfile
- python/generate-pypi-package.sh -> python/docker/scripts/generate-pypi-package.sh
- python/setup-docker-image.sh -> python/docker/scripts/setup-docker-image.sh
- python/build-deps.sh -> python/docker/scripts/build-boost.sh
- python/build-deps.sh -> python/docker/scripts/build-dune.sh
Added (24 files):
- python/docker/python_versions.json (single source of truth)
- python/docker/scripts/sync_versions.sh
- python/docker/scripts/read_python_config.py
- python/docker/run-docker-build.sh
- python/docker/README.md
- python/docker/test_wheels/* (complete testing framework)
Modified:
- python/setup.py.in
- .gitignore
MAJOR CHANGES
=============
Architecture Restructure
------------------------
- Separated build workflows: Clearly distinguished Docker/PyPI wheel
generation from CMake/PyBind11 compilation
- Moved Docker-specific files: Relocated docker build system to
appropriate locations
- Streamlined organization: Created logical separation between different
build contexts
Single Source of Truth Configuration
-------------------------------------
- Centralized Python version management: Created python_versions.json as
authoritative configuration
- Automated synchronization: Built sync_versions.sh script to maintain
consistency across all components
- Dynamic configuration: Components now read from JSON rather than
hardcoded values
Enhanced Docker Build System
----------------------------
- Multi-OS support: Added Ubuntu 22.04, Ubuntu 24.04, and Debian 11
Dockerfiles
- Improved caching: Split dependencies into separate Docker layers for
better build performance
- Fixed PyPI wheel generation: Added LD_LIBRARY_PATH setup for proper
library bundling, corrected auditwheel wheel copying from wheelhouse/
instead of dist/
- Optimized Docker layer structure: Delayed source code copying until
final stage, preventing dependency rebuilds on source changes and
reducing iteration time from 30+ to <5 minutes during development
Build Automation & Tooling
--------------------------
- Comprehensive wheel testing: Created opm-wheels CLI tool for building
and testing Docker images
- Automated validation: Integrated Python version validation and error
handling
- Enhanced scripts: Improved generate-pypi-package.sh with better error
handling and version management
Testing Framework
-----------------
- Docker-based testing: Complete framework for testing wheels across
multiple Python versions and OS configurations
- Automated validation: Wheel installation and import testing with
comprehensive error reporting
- Multi-version support: Parallel testing across Python 3.8-3.13
- Platform verification: Validates manylinux wheels install and function
correctly across Ubuntu 22.04/24.04 and Debian 11
Documentation & Usability
-------------------------
- Comprehensive maintenance guides: Detailed instructions for
adding/removing Python versions
- Clear workflows: Step-by-step procedures for build system maintenance
- Improved CLI experience: Better error messages, path handling, and
user guidance
- Updated documentation: Enhanced README files with practical examples
and troubleshooting
IMPACT
======
This restructure transforms the Python build system from a collection of
loosely coupled scripts into a cohesive, maintainable, and reliable build
automation system. The single source of truth configuration eliminates the
primary source of maintenance overhead, while the enhanced testing
framework provides confidence in the quality of generated wheels.
The changes enable the OPM project to more easily support new Python
versions, maintain consistency across platforms, and provide a better
developer experience for both maintainers and users.
Arne Morten Kvarving
Håkon Hægland