facebook/buck2
Apr 2026 – Apr 2026
1 Month active
Languages Used
Python
Technical Skills
CI/CDdependency managementtesting
Mykola Dzyuba
PROFILE
Mykola Dzyuba
Worked on the facebook/buck2 repository to deliver a performance-focused CI improvement by introducing a deps_filter_pattern parameter that pruned cquery.deps() traversal in the check_dependencies_test workflow. This optimization, implemented using Python and Buck2/BXL scripting, reduced CI timeouts for WhatsApp xdeps tests by limiting dependency graph exploration with targeted regex filtering. The work involved end-to-end changes across multiple scripts, including test infrastructure and CLI integration, and addressed build stability by reverting a breaking change affecting MWA Android builds. Additional enhancements included mitigating Kotlin KSP2 classloader cache issues, resulting in more reliable CI runs and faster feedback cycles.
Overall Statistics
Feature vs Bugs
100%Features
Repository Contributions
1Total
Bugs
0
Commits
1
Features
1
Lines of code
146
Activity Months1
Your Network
3601 peopleSame Organization
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Work History
April 2026
1 Commits • 1 Features
Apr 1, 2026April 2026: Key feature delivered a performance-focused CI improvement for Buck2. Implemented a new deps_filter_pattern to prune cquery.deps() traversal in check_dependencies_test, significantly reducing CI timeouts for WhatsApp xdeps tests. Applied end-to-end changes across check_dependencies_test.bxl, test_bxl_check_dependencies_template.py, check_dependencies_test.bzl (core and wrapper), and blocked_deps.bzl, with proper env var forwarding to the CLI. Addressed build stability by reverting a breaking change (D98815797) that affected MWA Android builds and added the -c kotlin.ksp2_classloader_cache=false flag to mitigate Kotlin KSP2 classloader cache issues. Overall, the changes improved CI reliability, reduced flaky test runs, and sped up feedback loops. Demonstrated strong Buck2/BXL/cquery expertise, regex-based graph pruning, and robust test infrastructure enhancements.
1 Commits • 1 Features
Apr 1, 2026April 2026: Key feature delivered a performance-focused CI improvement for Buck2. Implemented a new deps_filter_pattern to prune cquery.deps() traversal in check_dependencies_test, significantly reducing CI timeouts for WhatsApp xdeps tests. Applied end-to-end changes across check_dependencies_test.bxl, test_bxl_check_dependencies_template.py, check_dependencies_test.bzl (core and wrapper), and blocked_deps.bzl, with proper env var forwarding to the CLI. Addressed build stability by reverting a breaking change (D98815797) that affected MWA Android builds and added the -c kotlin.ksp2_classloader_cache=false flag to mitigate Kotlin KSP2 classloader cache issues. Overall, the changes improved CI reliability, reduced flaky test runs, and sped up feedback loops. Demonstrated strong Buck2/BXL/cquery expertise, regex-based graph pruning, and robust test infrastructure enhancements.
April 2026
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Quality Metrics
Correctness100.0%
Maintainability80.0%
Architecture80.0%
Performance100.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
Python
Technical Skills
CI/CDdependency managementtesting
Repositories Contributed To
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