MeshMC Update 7.3.0, now available

Highlights

• Introduction of the MMCO plugin system, establishing a formal extension architecture with a defined SDK and lifecycle.
• Addition of the MMCO Module Exception 1.0, enabling non-GPL compatible plugins under controlled conditions.
• First-party plugins introduced, including BackupSystem and NVIDIAPrime, demonstrating real-world MMCO usage.
• Significant improvements to plugin management, UI integration, and runtime behavior.
• Initial fuzzing infrastructure added for multiple core libraries (cmark, json4cpp, neozip, tomlplusplus).

Changelog

Added

• MMCO plugin system (SDK, loader, lifecycle management, metadata, hooks)
• MeshMC MMCO Module Exception 1.0 and updated licensing across the codebase
• Plugin SDK CMake integration and example plugin
• BackupSystem plugin for instance backup management (initial implementation)
• Pre-launch backup support and settings integration for BackupSystem
• NVIDIAPrime plugin for NVIDIA GPU offloading support
• Plugin launch modifiers and improved plugin management system
• Plugin metadata enhancements (code links, About dialog integration)
• Plugin build and staging configuration options
• Backup-related UI assets (icons across themes)

Changed

• Core architecture transitioned to a plugin-first model with MMCO as a first-class subsystem
• Licensing model updated from plain GPL-3.0-or-later to GPL-3.0-or-later WITH MMCO exception
• Plugin tab location updated in the UI
• Backup plugin UI labels and messaging improved
• Help menu actions refactored in MainWindow
• LoggedProcess and ModFolderPage enhanced to support runtime resource/shader pack addition
• CMake configuration updated for SDK and plugin staging
• Platform compatibility improvements (conditional unistd.h)

Fixed

• Fixed launcher icon issues
• Improved macOS icon rendering (Tahoe compatibility)
• REUSE compliance issues resolved
• General formatting and minor internal fixes

Removed

• Removed parallel execution in CI test commands for stability