June 2026 monthly summary for canonical/mir. Focused on delivering reliability, performance, and maintainability, with strong cross-language interop work for Wayland-rs and targeted build/quality improvements. Highlights include feature cleanups, build alignment, and expanded test coverage that reduce risk in CI and production. Key features delivered: - FdStore cleanup and simplification: removed backup fd from FdStore and simplified the FD store to reduce state complexity and error surface. - Wayland-rs: Build script and alignment improvements: updated build_script/main.rs and aligned related build processes to improve CI reliability. - Wayland-rs: Dispatch generation and C++ integration refactor: modularized the dispatch generator, refactored C++ protocol generation, generated C++ classes aligned with existing names, and pushed 2-step initialization from C++ to Rust. - Wayland-RS Interop Enhancements and safety improvements: implemented destroy_and_delete on C++ interfaces, aligned wayland_rs::Weak with wayland::Weak, and added an Executor to queue arbitrary C++ callbacks on the Rust thread. - Lifetime management utility: introduced and used is_alive for lifetime checks of Wayland resources, contributing to safer resource handling. - PR quality and workflow improvements: addressed PR feedback, added tests for workflow coverage, robustness fixes in PR finding logic, and integrated Copilot feedback into development. Major bugs fixed: - Code quality and stability: removed bogus comments, removed panics, addressed PR feedback, removed unnecessary null checks, and updated API wording for clarity. - Stabilization: reverted a change to stabilize the codebase as needed to maintain reliability. - PR findings robustness: fixed issues in PR finding logic (two commits). - Tests and coverage: added tests to improve PR workflow coverage and overall code health. Overall impact and accomplishments: - Reduced risk and improved reliability through targeted refactors and safety improvements. - Faster and more reliable builds with aligned Wayland-rs build scripts. - Safer cross-language interop and lifecycle handling, reducing runtime errors in Wayland resource management. Technologies/skills demonstrated: - Rust and C++ interop, Wayland protocol generation and integration, is_alive lifecycle checks, executor pattern for callbacks, build script tooling, and robust test-driven development.

In May 2026, the Mir project delivered a substantial Rust-based overhaul of the evdev integration, coupled with reliability, performance, and CI improvements. The work shifted core evdev logic from C++ to Rust, modernized udev integration, and tightened startup, teardown, and device handling. These changes reduce cross-language maintenance, improve safety and observability, and accelerate feature delivery with clearer ownership and lifecycle management.

April 2026 monthly summary focusing on key accomplishments, major fixes, and cross-repo impact across canonical/mir and flutter/flutter. Highlighting documentation improvements, Wayland interop hardening, cross-language interop enhancements, and windowing/UI improvements that drive reliability and developer velocity.

Month: 2026-03 Overview: - Delivered key features and reliability improvements across canonical/mir and flutter/flutter, with a focus on clearer event processing, safer resource handling, and native windowing capabilities for desktop Flutter apps. Strengthened build, testing, and CI readiness to accelerate future iterations. Key features delivered (business/value focus): - canonical/mir: - Refactor the event processing logic in evdev-rs to increase clarity and maintainability (commit 177852c6d4f3a0918d136bf24087a0634ae99b86). - Add missing alpha and tiled_edges checks to SurfaceSpecification and BasicWindowManager to ensure correct rendering and stability (commit 0499f7b016ed7ec3b685c64ccc1a24c1a7c2b513). - Modularized the middleware generator and completed generator improvements to improve developer velocity (commits 36679ee55a6ddb68ee8c75da63c0b69b1bb134b2, 9cec63c369e15fd2fa39f94c14dc1125dc6497fd). - FFI generation cleanup and workflow improvements to reduce stale state and improve generation reliability (commits ba2ebaf9fcd5e29a393dcc7d897b950fd3412e65, 36bd89010b47271d7036339e81438f73299ce582). - Borrowing raw file descriptors to enable resource sharing, reducing duplication and improving performance in resource management (commit bfdeb288ad861f86fad88dc5b5a723d5b03887d5). - flutter/flutter: - Flutter Windowing System for Desktop Windows (Dialog Windowing): added MaterialWindowingManager, WindowRegistry, and a windowing path for showDialog that renders in native windows, with tests and documentation (commits ea02c5fa3cf622da32e8595804268816160effe3). - Introduced SatelliteWindowController interface with tests, and wired a path for non-supported owners to fallback gracefully (commit 9f20e5d9bbd345ca94b86804c39f419cffbf6ab0). Major bugs fixed (stability and correctness): - Fixing bad identifiers and related refactors to prevent regressions (commit 0e824ae18791ba89aea68403881c1dd211fb3660). - Dispatch system stability and wiring fixes, including correct globals, mutable handler calls, middleware imports, and error silencing (commits 3502db8dd1765045c0925a92a56e53917f62bf25, 9a0412f1dcb808360b2e9fe8c0e854e36ed1b630, 5bb9c3fab3019a241fbff258d36b690b4e739d12). - Build system: Fix build errors, header/include management, and Fedora compatibility improvements (commits 4732ae0ca87f073deb7e6ab8d25db31468b461ad, 75c595b02488be8b0764ee35f6de1a58252ce9d8, d833e050a18d6241f2073e6a69549a2a2d209f57). - EVDEV: Fix missing initial events in evdev-rs and maintain correct event reporting (ed36872e4e1c9a8d430012c644cee3abbfd1a85a). Overall impact and accomplishments: - Strengthened core infrastructure, enabling safer resource sharing (FFI, raw fds), clearer event processing, and more reliable dispatch/middleware pipelines. Reduced build friction and improved platform readiness for Flutter desktop windowing, paving the way for faster delivery of UI parity and cross-platform features. Technologies and skills demonstrated: - Rust (evdev-rs), FFI workflows, middleware architecture, and dispatch patterns. - CMake/build-system hardening, include management, and Fedora compatibility. - Flutter desktop windowing architecture, MaterialWindowingManager, SatelliteWindow concepts, and test/documentation practices. - PR feedback incorporation, code quality improvements, and documentation enhancements.

February 2026 was a productive month focused on delivering foundational features, stabilizing the build, and strengthening cross-language bindings, while also enhancing Flutter desktop UX. Key code-gen work and build hygiene set a solid baseline for future sprints, with UX improvements adding business value for end users.

January 2026 focused on stability, cross-platform UX improvements, and cross-language Wayland integration. Key Windows UI enhancements for Flutter were delivered, alongside reliability improvements for window management. On canonical/mir, progress toward a Rust Wayland server with C++ bindings and broader API/tooling improvements, establishing a solid foundation for future multi-language support. Across both repositories, emphasis on test coverage, code hygiene, and CI reliability to accelerate safe changes and reduce risk in production. Key outcomes by area: - Flutter (flutter/flutter): Win32 windowing enhancements including PopupWindow API with PopupWindowController and PopupWindow, dynamic sizing-enabled tooltip windows, and tests; improved integration with window metrics for a smoother user experience. - Flutter: Robustness improvements for RegularWindow lifecycle to prevent unintended app exits on destruction and to complete windowCreated after readiness, improving reliability of integration tests. - CI/Windows: Reduced test flakiness by configuring Windows windowing tests (bringup set to false) to stabilize CI feedback. - Mir (canonical/mir): Implemented Rust Wayland server with C++ bindings and FFI integration; build adjustments and a runnable C++ example to demonstrate interop. - Mir: API surface extensions (e.g., add stop method), event signaling optimizations (eventfd-based), and run() returning Result for better error handling; groundwork for Wayland protocol parsing; broader tooling improvements (Rust logger, cargo fmt, versioning, CI config). Business value: These initiatives reduce UI friction on Windows, increase reliability of automated tests and CI feedback, and establish a robust, cross-language Wayland baseline that enables safer, faster expansion of desktop integrations and tooling.

December 2025 monthly summary: Delivered robust, cross-platform input handling and platform-detection improvements across mir, strengthened Rust/C++ build integration and maintenance, and advanced testing capabilities in Flutter. This work reduces platform-specific errors, accelerates CI feedback, and lays groundwork for scalable input architecture. Increased accessibility and cross-view reliability in Flutter, enabling more robust end-to-end tests.

November 2025 results: Delivered measurable business value and strengthened platform stability across canonical/mir and flutter/flutter. Key feature work includes symbol management improvements with Debian symbol support, improved error handling in the symbols map generator, and symbol reset behavior; robust input lifecycle management ensuring correct destruction order and unloading of input platforms; and systematic code-quality improvements driven by PR feedback. In flutter/flutter, windowing API enhancements using platformDispatcher, reliability improvements for tests, and accurate display_id reporting in FlutterWindowsView, complemented by tooltip windows with positioning logic and dedicated tests. Cross-repo impact includes reduced memory usage from removing explicit copies and stabilized packaging/build, enabling safer releases and faster iteration. Technologies demonstrated include Rust, evdev-rs integration, MIR_ENABLE_RUST gating, CMake/build system hardening, Windows windowing, and Dart/Flutter test automation.

Oct 2025 monthly summary focused on delivering stability, centralized hosting, and robust startup checks across Flutter and Mir repos. Highlights include test stabilization for windowing, centralized app-switcher demo hosting, intra-window switching enhancements, and defensive runtime checks to prevent crashes when required Wayland interfaces are unavailable.

September 2025: Focused on documentation quality, code hygiene, and cross-platform readiness across Mir and Flutter. Mir delivered clearer onboarding with Documentation and Tutorial Wording Improvements and header refactors, plus Word List Cleanup, Spell Check improvements, US English localization, and PR feedback integration. Documentation tooling was modernized (Doxygen/Exhale/Intersphinx) with API reference cleanups, and obsolete files were removed with branding standardizations (XWayland -> Xwayland). Flutter delivered accessibility announcement enhancements tied to viewId and Win32 windowing improvements, including a sample app and display manager rename for consistency. These efforts improve developer onboarding, reduce maintenance overhead, and accelerate reliable cross-platform feature delivery.

August 2025 monthly summary focusing on delivering Windows Win32 windowing enhancements for Flutter and improved focus-order management in Mir, with accessible UI improvements and robust clipboard and display reporting features. This set of work positions the projects for multi-window readiness, stronger accessibility, and improved observer reliability, delivering concrete business value through enhanced developer productivity, platform readiness, and end-user UX consistency.

July 2025 performance summary for canonical/mir: Delivered core input and rendering enhancements, stabilized startup, and improved test infrastructure and packaging alignment. Key features delivered include: (1) Keyboard Input Filtering via AppendKeyboardFilter to improve input processing reliability, (2) BufferPool auto-scaling to dynamically adapt memory buffers to demand, (3) WlSurface::set_buffer_transform implemented and wired to the renderable, (4) wl_output geometry transformation updated to reflect the correct orientation, and (5) Sticky keys accessibility feature added to broaden usability.

June 2025 monthly summary for canonical/mir focusing on delivering robust, cross-backend renderable rendering, stability, and accessibility improvements. Key work included feature delivery for gbm-kms cursor compositing, renderable orientation, cross-backend renderable enhancements, and accessibility enhancements, plus stability fixes and packaging improvements.

May 2025 monthly summary focused on delivering architectural improvements and stability across two primary repositories (canonical/mir and flutter/flutter), with clear business value in tiling reliability, shell surface lifecycle, and a more robust ScreenShooter pipeline, complemented by expanded testing scaffolding.

April 2025 (Month: 2025-04) focused on strengthening testing, expanding display configuration capabilities, and stabilizing core API surfaces for canonical/mir, driving higher reliability and downstream integration readiness. Key work spanned extensive test infrastructure improvements, richer display metadata, and a crucial bug fix that prevents resource leaks during destruction. Overall, the month delivered both measurable business value and durable technical gains: reduced risk in releases through broader, more resilient test coverage; improved user experience and configurability in multi-display environments; and a cleaner, exportable API surface for downstream components and extensions.

March 2025 — Cross‑platform platform quality and accessibility improvements; expanded test coverage to reduce risk and accelerate delivery. Business value: Improved Windows accessibility and input reliability for Flutter apps, reduced symbol-resolution risk in the MIR stack, and stronger window-management stability through comprehensive testing. These changes enable more robust user experiences, lower maintenance costs, and faster iteration on platform features. Key outcomes by repository: - flutter/flutter: Implemented multi‑view input handling and accessibility enhancements on Windows, including correct view resolution for TextInput, Windows focus request propagation, cross‑view focus events, and a view_id parameter for semantics actions. Tests and documentation updated to reflect new semantics and accessibility behavior. - canonical/mir: (a) Symbols map stability hardening to ensure exports reflect intended symbols and prevent runtime symbol-resolution errors; (b) Comprehensive testing suite for MinimalWindowManager, with tests for attached surfaces, movement gestures for maximized windows, exclusion zones, and a revamped test harness for better lifetimes and constness. Impact: Reduced risk of runtime failures, improved accessibility and input reliability for Windows users, and higher confidence in window management behavior across surface configurations.

February 2025 monthly summary for canonical/mir: Focused on stabilizing display output handling and improving text rendering robustness across Linux distributions. Implemented connectivity-aware processing in the display pipeline to skip disconnected outputs, preventing allocation errors and increasing system stability. Expanded default font lookup lists to include additional font and package names for SSD text rendering, improving rendering reliability across distributions. These changes contributed to higher runtime stability, reduced erroneous allocations, and broader platform compatibility.

Concise monthly summary for 2025-01: Delivered critical Z-Order API support and comprehensive test coverage for SurfaceStack, enabling reliable z-order assertions for compositor authors. Completed cross-distro packaging readiness for wlcs (Fedora, Alpine, Snap) by aligning dependencies (wlcs, wlcs-devel, gmp-devel, wlcs-dev) and test harness adjustments. Minor version bump to reflect changes and packaging/test harness refinements. No major bugs fixed this month. Business value: improves reliability of rendering tests, reduces CI friction, and accelerates cross-distro integration across downstream packaging.

December 2024: Window Manager testing enhancements in canonical/mir. Key features delivered: automated tests for attached window placement behavior (north/south/east/west), validating positioning and sizing within the output area. Major bugs fixed: none reported in the provided data. Overall impact: increases stability and regression safety for window attachment logic, enabling safer refactors and faster UI integration. Technologies/skills demonstrated: test-driven development, automated UI layout validation, traceability to commits (e.g., 28f6f9e489e4d82cca6ad717e926d07b904c2e50).

November 2024 – Canonical Mir: Focused on improving user-facing documentation, stabilizing core window management, and hardening the Wayland backend. Deliveries emphasize business value through clearer docs, reliable sizing/placement, and robust protocol handling.

October 2024 monthly summary for canonical/mir: Core work focused on strengthening Wayland activation flows and session management stability. Delivered a hardened activation path with default enablement, while tightening session ownership checks to prevent cross-session activation.

April 2024 (canonical/mir): Delivered foundational Mir testing infrastructure enhancements to improve test coverage, reliability, and CI feedback for the Mir display server. Introduced internal testing libraries and development packages to enable access to mocks/stubs and development headers, accelerating test authoring and validation workflows.