
Zihe Jiang worked on enhancing build and indexing workflows for the facebook/buck2-prelude repository, focusing on Swift index store performance and reliability. Over four months, Zihe introduced remote caching and subtarget support, enabling faster, more targeted builds by configuring cacheable parameters and refining build target parsing. Using Python and Starlark, Zihe developed features such as per-target Swift index-store builds, isolated build directories, and optimized dependency handling, which reduced build times and improved CI throughput. The work demonstrated depth in build system development, command-line tooling, and scripting, resulting in more efficient incremental builds and streamlined developer and continuous integration workflows.

September 2025 — Delivered targeted Swift index store improvements for the facebook/buck2-prelude repo, focusing on subtarget support and build optimization. Implemented missing subtarget definitions and enhanced the BXL script to parse and pass subtargets, enabling precise builds and indexing workflows. Introduced swift-index-store-1deps build target and corresponding subtarget to limit builds to immediate dependencies and optimize indexing by excluding transitive dependencies. These changes reduce indexing and build overhead, accelerate incremental workflows, and improve CI throughput. Technologies/skills demonstrated include: BXL scripting, subtarget/build-target design, and Swift indexing integration within a Buck/Bazel-like environment.
September 2025 — Delivered targeted Swift index store improvements for the facebook/buck2-prelude repo, focusing on subtarget support and build optimization. Implemented missing subtarget definitions and enhanced the BXL script to parse and pass subtargets, enabling precise builds and indexing workflows. Introduced swift-index-store-1deps build target and corresponding subtarget to limit builds to immediate dependencies and optimize indexing by excluding transitive dependencies. These changes reduce indexing and build overhead, accelerate incremental workflows, and improve CI throughput. Technologies/skills demonstrated include: BXL scripting, subtarget/build-target design, and Swift indexing integration within a Buck/Bazel-like environment.
August 2025 — facebook/buck2-prelude: Delivered three core enhancements to strengthen build reliability and performance, with backward-compatible target parsing, per-target Swift index-store builds, and safer inner Buck invocations.
August 2025 — facebook/buck2-prelude: Delivered three core enhancements to strengthen build reliability and performance, with backward-compatible target parsing, per-target Swift index-store builds, and safer inner Buck invocations.
June 2025 monthly summary for facebook/buck2-prelude focused on performance optimization and stability improvements in the Swift index-store workflow. Implemented Full-Swift-Index-Store Caching to accelerate builds, with caching enabled by setting the cacheable parameter to true. This change aims to reduce build times, improve reliability of the index-store generation, and provide a clearer path for future deprecations or fixes related to the absolute paths in the full-index-store sub-target. No major bug fixes required this month; primary emphasis was feature delivery and resilience improvements.
June 2025 monthly summary for facebook/buck2-prelude focused on performance optimization and stability improvements in the Swift index-store workflow. Implemented Full-Swift-Index-Store Caching to accelerate builds, with caching enabled by setting the cacheable parameter to true. This change aims to reduce build times, improve reliability of the index-store generation, and provide a clearer path for future deprecations or fixes related to the absolute paths in the full-index-store sub-target. No major bug fixes required this month; primary emphasis was feature delivery and resilience improvements.
May 2025: Delivered performance optimization for the Buck2 Prelude indexing path by enabling Swift Index Store remote caching. Implemented by setting cacheable = true in swift_compilation.bzl and recorded in commit b7a83f7f0b2065b3f536f8fe580951964df08557 for facebook/buck2-prelude. Business impact: faster Glean indexing and smoother CI/builds as caching reduces redundant work. Skills demonstrated: Bazel build config, Swift tooling, remote caching strategies, and careful code review.
May 2025: Delivered performance optimization for the Buck2 Prelude indexing path by enabling Swift Index Store remote caching. Implemented by setting cacheable = true in swift_compilation.bzl and recorded in commit b7a83f7f0b2065b3f536f8fe580951964df08557 for facebook/buck2-prelude. Business impact: faster Glean indexing and smoother CI/builds as caching reduces redundant work. Skills demonstrated: Bazel build config, Swift tooling, remote caching strategies, and careful code review.
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