PLEIADES v2.0 - Major Architecture Overhaul

PLEIADES v2.0 - Major Release 🚀

This is a complete architectural overhaul of PLEIADES, modernizing the codebase for better maintainability and scientific computing workflows.

🎯 Major Changes

Project Structure

• Modern Python layout: Adopted src/ directory structure following current best practices
• Legacy preservation: Old code moved to legacy/ directory for backward reference
• Modular architecture: Clear separation of concerns with dedicated modules for nuclear data, SAMMY integration, and processing

Development Environment

• Pixi migration: Replaced Poetry with Pixi for better scientific computing support
• Comprehensive testing: 1078 tests with 78% code coverage
• Pre-commit hooks: Automated code quality checks

SAMMY Integration

• JSON mode support: New multi-isotope fitting capabilities
• Enhanced I/O managers: Robust parsing of SAMMY input/output files
• Improved parameter handling: Better resonance parameter management

Data Processing

• ORNL VENUS support: Specialized processing for VENUS instrument data
• Enhanced normalization: Multiple normalization strategies
• Nexus file support: Native HDF5/Nexus format handling

📦 Installation

Using Pixi (Recommended)

git clone https://github.com/lanl/PLEIADES.git
cd PLEIADES
pixi install
pixi run test  # Run tests

Using pip

pip install pleiades

🔄 Migration from v0.1

This is a breaking release. Key migration points:

• Import paths changed: from pleiades → may need updates
• Configuration files: New YAML-based configuration
• API changes: Check documentation for updated interfaces

📚 Documentation

Full documentation available at Read the Docs

🙏 Acknowledgments

Thanks to all contributors who made this major release possible!

📋 Full Changelog

See CHANGELOG.md for detailed changes.

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PLEIADES: Python Libraries Extensions for Isotopic Analysis via Detailed Examination of SAMMY