Phase 9: KDE Plasma 6 Porting Infrastructure

Version: v0.22.0 | Date: March 2026 | Status: COMPLETE

Overview

Phase 9 builds the complete software stack required to run KDE Plasma 6 on VeridianOS. Across 11 sprints and 314 individual tasks, this phase implements shim libraries, platform plugins, and backend integrations spanning from the C runtime up through Qt 6, KDE Frameworks 6, KWin, and the Plasma shell. The result is approximately 130 new files and 45,000 lines of code providing a full KDE porting layer.

Key Deliverables

  • Sprint 9.0: Dynamic linker, libc shims, and C++ runtime support
  • Sprint 9.1: DRM/KMS kernel interface and libinput event handling
  • Sprint 9.2: System library shims (zlib, libpng, libjpeg, etc.)
  • Sprint 9.3: EGL/GLES2 rendering context and libepoxy loader
  • Sprint 9.4: FreeType font rasterizer, HarfBuzz shaping, Fontconfig matching, xkbcommon keymap compilation
  • Sprint 9.5: D-Bus message bus, logind session management, Polkit authorization
  • Sprint 9.6: Qt 6 QPA (Qt Platform Abstraction) plugin -- 19 source files implementing VeridianOS as a native Qt platform
  • Sprint 9.7: KDE Frameworks 6 backend modules (KIO, Solid, KWindowSystem, etc.)
  • Sprint 9.8: KWin DRM platform backend (1,228 LOC) for compositor integration
  • Sprint 9.9: Plasma Desktop shell, panels, applets, and system tray
  • Sprint 9.10: Integration testing, CI workflow, and polish

Technical Highlights

  • The Qt 6 QPA plugin maps VeridianOS Wayland surfaces to Qt windows, translating input events, clipboard operations, and screen geometry
  • 7 Wayland protocol implementations provide the compositor interfaces KDE expects: xdg-shell, xdg-decoration, layer-shell, idle-inhibit, and others (1,153 LOC total)
  • Breeze widget style reimplemented for the VeridianOS renderer (1,580 LOC)
  • Breeze window decoration with title bar buttons and frame rendering (1,054 LOC)
  • Display manager supports session selection and user authentication (915 LOC)
  • XWayland integration enables legacy X11 application support (1,011 LOC)
  • Dedicated CI workflow validates the KDE stack builds cleanly (332 LOC)

Files and Statistics

  • Sprints: 11 (9.0 through 9.10)
  • Tasks completed: 314
  • Files added/modified: ~130
  • Lines of code: ~45,000
  • Primary directories: userland/{libc,qt6,kf6,kwin,plasma,integration}/