google/mozc
Oct 2024 – Oct 2025
13 Months active
Languages Used
BazelC++GoXMLYAMLDockerfileMarkdownPython
Technical Skills
Build System ConfigurationBuild ToolsC++ DevelopmentCI/CDGitHub ActionsInstaller Scripting
Yohei Yukawa
PROFILE
Yohei Yukawa
Yukawa contributed to the google/mozc repository by modernizing its cross-platform build system, enhancing Windows ARM64 support, and improving installer reliability. Over 13 months, Yukawa delivered features such as Bazel-based build automation, CI/CD pipeline upgrades, and robust error handling for Windows installer workflows. Using C++, Python, and Bazel, Yukawa refactored legacy code, streamlined dependency management, and introduced security hardening in CI environments. The work included ARM64 MSI packaging, Windows process management improvements, and Android NDK integration, resulting in faster, more reliable builds and reduced maintenance overhead. These efforts established a stable foundation for ongoing platform expansion and release velocity.
Overall Statistics
Feature vs Bugs
76%Features
Repository Contributions
123Total
Bugs
9
Commits
123
Features
28
Lines of code
14,753
Activity Months13
Your Network
333 people
Work History
October 2025
9 Commits • 2 Features
Oct 1, 2025October 2025 monthly summary for google/mozc focusing on security, stability, and Windows-specific improvements. Delivered security hardening of CI workflows and Windows handling, Windows UI/UX reliability fixes, and a build/process compatibility internal refactor to support Windows environments and ARM64 readiness. Major bugs fixed include Windows text flicker prevention, Excel text reconversion fixes, and restoration of SELECT/HIGHLIGHT_CANDIDATE command handling. Overall impact includes a stronger CI security posture, more stable Windows UX, and groundwork for future Windows ARM64 support. Technologies demonstrated span C++ RAII patterns, Windows process management, LLVM-based build refactors, and cross-platform environment consistency.
9 Commits • 2 Features
Oct 1, 2025October 2025 monthly summary for google/mozc focusing on security, stability, and Windows-specific improvements. Delivered security hardening of CI workflows and Windows handling, Windows UI/UX reliability fixes, and a build/process compatibility internal refactor to support Windows environments and ARM64 readiness. Major bugs fixed include Windows text flicker prevention, Excel text reconversion fixes, and restoration of SELECT/HIGHLIGHT_CANDIDATE command handling. Overall impact includes a stronger CI security posture, more stable Windows UX, and groundwork for future Windows ARM64 support. Technologies demonstrated span C++ RAII patterns, Windows process management, LLVM-based build refactors, and cross-platform environment consistency.
October 2025
September 2025
5 Commits • 2 Features
Sep 1, 2025September 2025: Delivered maintainability and build reliability improvements for google/mozc. Key actions included removing the legacy IsJisX0208 code path and unused functions, and upgrading the build/CI stack for Android 15+ compatibility. These changes reduce technical debt, lower risk of regressions, and improve cross-platform reliability for release pipelines.
September 2025
5 Commits • 2 Features
Sep 1, 2025September 2025: Delivered maintainability and build reliability improvements for google/mozc. Key actions included removing the legacy IsJisX0208 code path and unused functions, and upgrading the build/CI stack for Android 15+ compatibility. These changes reduce technical debt, lower risk of regressions, and improve cross-platform reliability for release pipelines.
August 2025
1 Commits
Aug 1, 2025Month: 2025-08 — Concise monthly summary focusing on key accomplishments for google/mozc. The primary achievement was strengthening installer reliability by enforcing OS compatibility checks, reducing mis-installations on unsupported Windows versions and aligning the product with supported platform guidelines.
1 Commits
Aug 1, 2025Month: 2025-08 — Concise monthly summary focusing on key accomplishments for google/mozc. The primary achievement was strengthening installer reliability by enforcing OS compatibility checks, reducing mis-installations on unsupported Windows versions and aligning the product with supported platform guidelines.
August 2025
July 2025
8 Commits • 2 Features
Jul 1, 2025July 2025 monthly summary for google/mozc focusing on business value and technical accomplishments. Key work delivered centers on Bazel build system modernization and dependency management to improve build reliability and Windows compatibility, plus targeted codebase cleanup.
July 2025
8 Commits • 2 Features
Jul 1, 2025July 2025 monthly summary for google/mozc focusing on business value and technical accomplishments. Key work delivered centers on Bazel build system modernization and dependency management to improve build reliability and Windows compatibility, plus targeted codebase cleanup.
June 2025
12 Commits • 2 Features
Jun 1, 2025June 2025 performance summary for google/mozc: Focused on cross-platform reliability and maintainability, delivering Windows ARM64 support enhancements, a critical TIP registration bug fix, and a modernized CI/build pipeline that stabilizes releases across Windows and macOS. The work strengthened business value by expanding Windows ARM64 adoption, improving error visibility and user feedback, and speeding up release cycles through streamlined pipelines.
12 Commits • 2 Features
Jun 1, 2025June 2025 performance summary for google/mozc: Focused on cross-platform reliability and maintainability, delivering Windows ARM64 support enhancements, a critical TIP registration bug fix, and a modernized CI/build pipeline that stabilizes releases across Windows and macOS. The work strengthened business value by expanding Windows ARM64 adoption, improving error visibility and user feedback, and speeding up release cycles through streamlined pipelines.
June 2025
May 2025
11 Commits • 5 Features
May 1, 2025May 2025 summary for google/mozc: Delivered cross-platform build system and CI modernization, tight parity between Bazel and GYP, and targeted toolchain improvements to accelerate releases across macOS, Windows, and Linux. Also advanced cleanup and reliability improvements, including removal of deprecated CrashReportHandler references and Windows input handling refinements, plus practical installer tooling to simplify Windows MSI flows. These efforts reduce CI times, improve platform consistency, and enhance end-user stability across widely used environments.
May 2025
11 Commits • 5 Features
May 1, 2025May 2025 summary for google/mozc: Delivered cross-platform build system and CI modernization, tight parity between Bazel and GYP, and targeted toolchain improvements to accelerate releases across macOS, Windows, and Linux. Also advanced cleanup and reliability improvements, including removal of deprecated CrashReportHandler references and Windows input handling refinements, plus practical installer tooling to simplify Windows MSI flows. These efforts reduce CI times, improve platform consistency, and enhance end-user stability across widely used environments.
April 2025
12 Commits • 2 Features
Apr 1, 2025April 2025 monthly summary for google/mozc: Achieved notable improvements in CI/test reliability and cross-platform stability. Focused on Windows CI/Bazel infrastructure, Windows data/test artifact stability, and Python 3.9 compatibility with stable data processing.
12 Commits • 2 Features
Apr 1, 2025April 2025 monthly summary for google/mozc: Achieved notable improvements in CI/test reliability and cross-platform stability. Focused on Windows CI/Bazel infrastructure, Windows data/test artifact stability, and Python 3.9 compatibility with stable data processing.
April 2025
March 2025
19 Commits • 3 Features
Mar 1, 2025March 2025 (google/mozc): Delivered cross-platform build improvements and stronger dependency controls. Focused on Windows Bazel toolchain integration, reliability fixes, and Linux CI enhancements, with updated dependencies and robust update tooling. These changes reduce build failures, shorten iteration cycles, and improve consistency across Windows, Linux, and CI environments, delivering measurable business value in faster shipping and more maintainable configurations.
March 2025
19 Commits • 3 Features
Mar 1, 2025March 2025 (google/mozc): Delivered cross-platform build improvements and stronger dependency controls. Focused on Windows Bazel toolchain integration, reliability fixes, and Linux CI enhancements, with updated dependencies and robust update tooling. These changes reduce build failures, shorten iteration cycles, and improve consistency across Windows, Linux, and CI environments, delivering measurable business value in faster shipping and more maintainable configurations.
February 2025
17 Commits • 4 Features
Feb 1, 2025February 2025 monthly summary for google/mozc focusing on delivering cross-platform build reliability, NDK modernization, Windows clang-cl support, branding and Bazel tooling updates, with strong business value and technical outcomes.
17 Commits • 4 Features
Feb 1, 2025February 2025 monthly summary for google/mozc focusing on delivering cross-platform build reliability, NDK modernization, Windows clang-cl support, branding and Bazel tooling updates, with strong business value and technical outcomes.
February 2025
January 2025
8 Commits • 2 Features
Jan 1, 2025January 2025 Mozc engineering monthly summary focusing on Windows build reliability and Android NDK integration within google/mozc. Key outcomes include stabilizing the Windows toolchain workflow, modernizing the Bazel-based build process, and simplifying the Docker image to require only the Android NDK. These changes reduce CI failures, improve cross-platform artifact correctness (32/64-bit), and accelerate developer onboarding for Windows and Android targets. Lower-level improvements increased debuggability (PDB generation) and build compatibility (CETCOMPAT, DEPENDENTLOADFLAG) while preserving existing artifacts. The work also sets the stage for future tooling updates and easier platform updates across the project.
January 2025
8 Commits • 2 Features
Jan 1, 2025January 2025 Mozc engineering monthly summary focusing on Windows build reliability and Android NDK integration within google/mozc. Key outcomes include stabilizing the Windows toolchain workflow, modernizing the Bazel-based build process, and simplifying the Docker image to require only the Android NDK. These changes reduce CI failures, improve cross-platform artifact correctness (32/64-bit), and accelerate developer onboarding for Windows and Android targets. Lower-level improvements increased debuggability (PDB generation) and build compatibility (CETCOMPAT, DEPENDENTLOADFLAG) while preserving existing artifacts. The work also sets the stage for future tooling updates and easier platform updates across the project.
December 2024
11 Commits • 2 Features
Dec 1, 2024During December 2024, Mozc's build and cross-platform readiness advanced significantly. We delivered ARM64 build readiness by restructuring architecture-specific configurations (CETCOMPAT), simplifying ProgramFilesX86Cache logic, removing Windows architecture macros, and refactoring env file handling to enable ARM64 builds without impacting final artifacts. Concurrently, we modernized the build system by upgrading Bazel to 8.0.0, cleaning up dependencies, updating rules (apple, python, qt_win), addressing Bazel version changes, and stabilizing glob/path handling. These efforts reduce build fragility, improve cross-platform consistency, and set a solid foundation for future ARM64 and Windows builds, delivering tangible business value by accelerating platform expansion and simplifying maintenance.
11 Commits • 2 Features
Dec 1, 2024During December 2024, Mozc's build and cross-platform readiness advanced significantly. We delivered ARM64 build readiness by restructuring architecture-specific configurations (CETCOMPAT), simplifying ProgramFilesX86Cache logic, removing Windows architecture macros, and refactoring env file handling to enable ARM64 builds without impacting final artifacts. Concurrently, we modernized the build system by upgrading Bazel to 8.0.0, cleaning up dependencies, updating rules (apple, python, qt_win), addressing Bazel version changes, and stabilizing glob/path handling. These efforts reduce build fragility, improve cross-platform consistency, and set a solid foundation for future ARM64 and Windows builds, delivering tangible business value by accelerating platform expansion and simplifying maintenance.
December 2024
November 2024
7 Commits • 1 Features
Nov 1, 2024November 2024 monthly summary for google/mozc: Key features delivered include Build System Modernization with Bazel/bzlmod upgrade, cross-compilation support for Qt host tools, removal of legacy WORKSPACE, and cleanup of build options for CI stability; Windows ARM64 Build/Installer Experience Improvements delivering clearer MSVC messaging and installer restrictions to prevent ARM64 install errors; plus targeted cleanups (common_win.gypi) improving maintainability. Impact: higher CI reliability, faster cross-platform builds, fewer ARM64 install issues, and clearer upgrade paths. Technologies/skills demonstrated: Bazel/bzlmod, Bazel CI, cross-compilation, Qt host tooling, Windows/MSVC messaging, MSI installation controls, code cleanup. Reference commits: 1a0d98a537b3f016da9c74503b6471f2e4336dc8, 9d3e8230b9034656bf2d3975f1ff9b2493dcfd3d, 2016df940b2adc21a279d6597be5b89e80cc307a, a0fed621e7ae4fb99629631654e2a65b942c653b, df1bbd91020a8c2b06eadce5046e46351135de21, 138298e6d5e544af4ececa4a9c81d4dca8b998c5, fa9533ef6505cf25e02afdfa8eee596c697ee33a, df1bbd91020a8c2b06eadce5046e46351135de21
November 2024
7 Commits • 1 Features
Nov 1, 2024November 2024 monthly summary for google/mozc: Key features delivered include Build System Modernization with Bazel/bzlmod upgrade, cross-compilation support for Qt host tools, removal of legacy WORKSPACE, and cleanup of build options for CI stability; Windows ARM64 Build/Installer Experience Improvements delivering clearer MSVC messaging and installer restrictions to prevent ARM64 install errors; plus targeted cleanups (common_win.gypi) improving maintainability. Impact: higher CI reliability, faster cross-platform builds, fewer ARM64 install issues, and clearer upgrade paths. Technologies/skills demonstrated: Bazel/bzlmod, Bazel CI, cross-compilation, Qt host tooling, Windows/MSVC messaging, MSI installation controls, code cleanup. Reference commits: 1a0d98a537b3f016da9c74503b6471f2e4336dc8, 9d3e8230b9034656bf2d3975f1ff9b2493dcfd3d, 2016df940b2adc21a279d6597be5b89e80cc307a, a0fed621e7ae4fb99629631654e2a65b942c653b, df1bbd91020a8c2b06eadce5046e46351135de21, 138298e6d5e544af4ececa4a9c81d4dca8b998c5, fa9533ef6505cf25e02afdfa8eee596c697ee33a, df1bbd91020a8c2b06eadce5046e46351135de21
October 2024
3 Commits • 1 Features
Oct 1, 2024In Oct 2024, google/mozc delivered automation and reliability improvements across CI, installer lifecycle, and cross‑platform build support. A new GitHub Actions workflow runs buildifier lint on BUILD.bazel and *.bzl on every push, improving code quality and consistency. The installer lifecycle was hardened by ensuring mozc_server and mozc_renderer shut down during upgrades (and uninstall), removing upgrade blockers. The Windows build workflow regained a 32‑bit Bazel workaround in .bazelrc to maintain compatibility with Bazel 7.0+ until a permanent solution is available. These changes reduce post‑merge defects, unblock upgrades, and preserve Windows build stability, delivering business value through faster feedback, fewer upgrade failures, and broader platform support. Technologies demonstrated include CI automation with GitHub Actions, Bazel/buildifier tooling, Windows build considerations, and installer lifecycle management.
3 Commits • 1 Features
Oct 1, 2024In Oct 2024, google/mozc delivered automation and reliability improvements across CI, installer lifecycle, and cross‑platform build support. A new GitHub Actions workflow runs buildifier lint on BUILD.bazel and *.bzl on every push, improving code quality and consistency. The installer lifecycle was hardened by ensuring mozc_server and mozc_renderer shut down during upgrades (and uninstall), removing upgrade blockers. The Windows build workflow regained a 32‑bit Bazel workaround in .bazelrc to maintain compatibility with Bazel 7.0+ until a permanent solution is available. These changes reduce post‑merge defects, unblock upgrades, and preserve Windows build stability, delivering business value through faster feedback, fewer upgrade failures, and broader platform support. Technologies demonstrated include CI automation with GitHub Actions, Bazel/buildifier tooling, Windows build considerations, and installer lifecycle management.
October 2024
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Quality Metrics
Correctness96.0%
Maintainability94.4%
Architecture93.6%
Performance89.8%
AI Usage20.0%
Skills & Technologies
Programming Languages
BatchBazelBzlCC++DockerfileGYPGoHTMLJavaScript
Technical Skills
ARM64ARM64 DevelopmentAndroid DevelopmentAutomationBazelBug FixingBuild AutomationBuild EngineeringBuild SystemBuild System ConfigurationBuild System ManagementBuild SystemsBuild ToolsC++C++ Build Optimization
Repositories Contributed To
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