Developer
Vincent Lee
leevince@meta.com
Performance
YoY:+100%Key patterns and highlights from this developer's activity.
Breakdown of growth, maintenance, and fixes effort over time.
Bugs introduced vs. fixed over time.
Reclassifies engineering effort based on bug attribution. Commits that introduced bugs are retrospectively counted as poor investments.
Investment Quality reclassifies engineering effort based on bug attribution data. Commits identified as buggy origins (those that introduced bugs later fixed by someone) have their grow and maintenance time moved into the Wasted Time category. Their waste (fix commits) remains counted as productive. All other commits retain their standard classification: grow is productive, maintenance is maintenance, and waste (fixes) is productive.
The standard model classifies commits as Growth, Maintenance, or Fixes. Investment Quality adds a quality lens: a commit that introduced a bug is retrospectively counted as a poor investment — the engineering time spent on it was wasted because it ultimately required additional fix work. Fix commits (Fixes in the standard model) are reframed as productive, because fixing bugs is valuable work.
Currently computed client-side from commit and bug attribution data. Ideal server-side endpoint:
POST /v1/organizations/{orgId}/investment-quality
Content-Type: application/json
Request:
{
"startTime": "2025-01-01T00:00:00Z",
"endTime": "2025-12-31T23:59:59Z",
"bucketSize": "BUCKET_SIZE_MONTH",
"groupBy": ["repository_id" | "deliverer_email"]
}
Response:
{
"productivePct": 74,
"maintenancePct": 18,
"wastedPct": 8,
"buckets": [
{
"bucketStart": "2025-01-01T00:00:00Z",
"productive": 4.2,
"maintenance": 1.8,
"wasted": 0.6
}
]
}Latest analyzed commits from this developer.
| Hash | Message | Date | Files |
|---|
Commit activity distribution by hour and day of week. Shows when this developer is most active.
Developers who frequently work on the same files and symbols. Higher score means stronger code collaboration.
| Effort |
|---|
| a7a2f1aa | This commit introduces a **new capability** to the **Android build system** by adding `extra_relinker_outputs` to `android_binary` and `android_aar` rules. This allows the build system to **track additional linker outputs** from the relinker, such as LLVM pass pipeline statistics files, as first-class Buck artifacts. The change involves updating `relink_libraries` in `prelude/android/android_binary_native_library_rules.bzl` to merge these extra arguments and adding new utility functions in `prelude/android/relinker_linker_outputs.bzl` and `prelude/android/util.bzl` to manage these outputs. This enhancement is crucial for enabling **LLVM pass pipeline statistics collection** during Android release builds, mirroring a pattern used in Apple's linker output handling. | Feb 6 | 4 | grow |
| 7a249931 | This commit introduces **multi-architecture build support** for projects utilizing `early gatorade`, enabling stable builds to produce outputs for multiple platforms. A new `gatorade_mergemap_tool` is created and integrated to combine the results from `gatorade`'s cross-library. Specifically, this tool is added as a provider field to `AndroidToolchainInfo` in `prelude/android/android_toolchain.bzl` and then wired into the `system_android_toolchain` definition and implementation in `prelude/toolchains/android.bzl`. This **new capability** significantly enhances the flexibility of Android builds by allowing the aggregation of platform-specific outputs. | Jan 27 | 2 | grow |
| 1cd3b45e | This commit performs a **maintenance rollback**, **reverting** the recent addition of an `llvm_stats` subtarget. It specifically **removes references** to `llvm_stats` from the `AndroidDerivedApkInfo` and `DefaultInfo` providers within the `apk_genrule_impl` function in `prelude/android/apk_genrule.bzl`. This **critical revert** addresses a **breaking change** that was impacting the "late gatorade" pipeline, ensuring **build stability** for the **Android build system** by temporarily removing the problematic `llvm_stats` integration. | Nov 25 | 4 | grow |
| 526bdaa6 | This commit **reverts** a previous change that aimed to fix test failures by filtering `None` values from `native_lib_dynamic_outputs`. Specifically, this **maintenance** action undoes the modification within the `get_android_binary_native_library_info` function in `prelude/android/android_binary_native_library_rules.bzl`. The change restores the prior behavior where `None` values are no longer filtered before being passed to `gatorade_libraries`. This indicates the original fix was either ineffective or introduced new issues, impacting the **Android native library build rules** and their processing of dynamic outputs. | Nov 25 | 1 | waste |
| 6b2bfc3b | This commit **enhances the Android native library rules** to ensure that **Gatorade thunk symbols** are correctly exposed with global visibility. It modifies the `create_relinker_version_script` function within `prelude/android/android_binary_native_library_rules.bzl` to explicitly mark any symbols suffixed with `_Gatorade_Thunk` as global. This **configuration update** is essential because Gatorade generates these thunk symbols, and the version script, which operates before Gatorade, must prevent their internalization. The change guarantees proper symbol resolution and linkage for Android native binaries utilizing Gatorade. | Nov 7 | 1 | grow |
| c50e5976 | This commit **introduces a new `passthrough` mode** for **Android build rules**, specifically by **extending the `GatoradeMode` enumeration** within `prelude/decls/android_rules.bzl`. This **new feature** allows for a distinct processing or handling strategy for Android-related build artifacts. The addition of `passthrough` provides greater flexibility in build configurations, enabling downstream systems to utilize this new behavior. | Mar 18 | 1 | grow |
| fb61a489 | This commit **refactors** the **Android build rules** by introducing a new `GatoradeMode` enum within `prelude/decls/android_rules.bzl`. The `enable_gatorade` attribute in the `android_aar`, `android_binary`, and `android_bundle` rules is updated to use this enum instead of a boolean, providing more expressive and scalable configuration options. This change improves the flexibility of the `gatorade` parameter, allowing for more nuanced control beyond a simple on/off switch. Users of these **Android build rules** will need to update their configurations to leverage the new `GatoradeMode` enum values. | Mar 11 | 1 | maint |
| 88b4b1f6 | This commit introduces a **new feature** to the **Android build system**, adding the `native_library_merge_linker_args_all` attribute to `android_aar`, `android_binary`, and `android_bundle` rules. This allows developers to specify linker arguments that will be uniformly applied to *all* native merged libraries, significantly simplifying the management of common linker flags across large applications. The new attribute's logic, implemented in `prelude/android/android_binary_native_library_rules.bzl`, ensures that these global arguments are applied before any library-specific `native_library_merge_linker_args`, allowing for targeted overrides. This enhancement improves the scalability and maintainability of linker configurations for complex Android projects. | Mar 8 | 2 | grow |
| aa18ad88 | This commit introduces a **new feature** that allows users to pass **extra linker flags** specifically to the relinker stage of Android builds. It adds a `relinker_extra_args` attribute to the `android_aar`, `android_binary`, and `android_bundle` rules defined in `prelude/decls/android_rules.bzl`. These arguments are then integrated and utilized within the `relink_libraries` function in `prelude/android/android_binary_native_library_rules.bzl`. This enhancement provides greater flexibility for build optimizations, enabling strategies like applying Link-Time Optimization (LTO) only during the final relinking phase, which can **improve build speed** for Android applications. | Feb 21 | 2 | grow |
| 7bb7705a | This commit **re-lands a feature enhancement** for the **`apk_genrule`** in the **`prelude/android`** module, specifically enabling the direct passthrough of `native_libs` for **Android App Bundle (AAB) builds**. It resolves a previous regression by ensuring that **all subtargets are correctly captured** within the `apk_genrule_impl` function. This **improves developer experience** by streamlining the build process for Android applications that incorporate native libraries, eliminating the need to explicitly reference the `android_binary` rule. | Feb 20 | 1 | grow |
| b2a4680a | This commit **enhances the Buck2 Android build rules** by introducing a **new capability** to directly pass `native_libs` through the `apk_genrule` for **Android App Bundle (AAB) generation**. It modifies the `apk_genrule_impl` function in `prelude/android/apk_genrule.bzl` to include `native_libs` in its `sub_targets`, simplifying the process of incorporating native libraries into AABs. This change improves developer experience by removing the need to explicitly reference `android_binary` rules for native library inclusion. The update particularly benefits `m4a` release builds and includes improved test cases and fixes for Redex integration. | Feb 20 | 1 | grow |
| 7b94287c | This commit introduces a **new capability** to the **Android build system**, specifically enhancing the `apk_genrule` to properly pass `native_libs` for **Android App Bundle (AAB) targets**. It modifies the `apk_genrule_impl` function in `prelude/android/apk_genrule.bzl` to extract and include native libraries from sub-targets during AAB generation. This change aligns the AAB build path with the existing `android_binary` behavior, which already supported `native_libs` passthrough. The update simplifies the build process for projects utilizing native libraries within AABs, particularly for m4a release builds, by removing the need for manual handling of these dependencies. | Feb 15 | 1 | grow |
| 8338dbe9 | This commit introduces a **new capability** to the **Android build system**, specifically enhancing the `apk_genrule`. It now allows `native_libs` to be directly passed through the `apk_genrule`, eliminating the need to explicitly retrieve the `android_binary` rule for building targeted native libraries. This change, primarily in `prelude/android/apk_genrule.bzl`, simplifies the **Android native library development workflow**, making it more convenient for developers. Additionally, debug output for `native_libs` is added in `prelude/android/android_binary_native_library_rules.bzl` under specific conditions to aid in understanding native library resolution. | Jan 13 | 2 | grow |
This commit introduces a **new capability** to the **Android build system** by adding `extra_relinker_outputs` to `android_binary` and `android_aar` rules. This allows the build system to **track additional linker outputs** from the relinker, such as LLVM pass pipeline statistics files, as first-class Buck artifacts. The change involves updating `relink_libraries` in `prelude/android/android_binary_native_library_rules.bzl` to merge these extra arguments and adding new utility functions in `prelude/android/relinker_linker_outputs.bzl` and `prelude/android/util.bzl` to manage these outputs. This enhancement is crucial for enabling **LLVM pass pipeline statistics collection** during Android release builds, mirroring a pattern used in Apple's linker output handling.
This commit introduces **multi-architecture build support** for projects utilizing `early gatorade`, enabling stable builds to produce outputs for multiple platforms. A new `gatorade_mergemap_tool` is created and integrated to combine the results from `gatorade`'s cross-library. Specifically, this tool is added as a provider field to `AndroidToolchainInfo` in `prelude/android/android_toolchain.bzl` and then wired into the `system_android_toolchain` definition and implementation in `prelude/toolchains/android.bzl`. This **new capability** significantly enhances the flexibility of Android builds by allowing the aggregation of platform-specific outputs.
This commit performs a **maintenance rollback**, **reverting** the recent addition of an `llvm_stats` subtarget. It specifically **removes references** to `llvm_stats` from the `AndroidDerivedApkInfo` and `DefaultInfo` providers within the `apk_genrule_impl` function in `prelude/android/apk_genrule.bzl`. This **critical revert** addresses a **breaking change** that was impacting the "late gatorade" pipeline, ensuring **build stability** for the **Android build system** by temporarily removing the problematic `llvm_stats` integration.
This commit **reverts** a previous change that aimed to fix test failures by filtering `None` values from `native_lib_dynamic_outputs`. Specifically, this **maintenance** action undoes the modification within the `get_android_binary_native_library_info` function in `prelude/android/android_binary_native_library_rules.bzl`. The change restores the prior behavior where `None` values are no longer filtered before being passed to `gatorade_libraries`. This indicates the original fix was either ineffective or introduced new issues, impacting the **Android native library build rules** and their processing of dynamic outputs.
This commit **enhances the Android native library rules** to ensure that **Gatorade thunk symbols** are correctly exposed with global visibility. It modifies the `create_relinker_version_script` function within `prelude/android/android_binary_native_library_rules.bzl` to explicitly mark any symbols suffixed with `_Gatorade_Thunk` as global. This **configuration update** is essential because Gatorade generates these thunk symbols, and the version script, which operates before Gatorade, must prevent their internalization. The change guarantees proper symbol resolution and linkage for Android native binaries utilizing Gatorade.
This commit **introduces a new `passthrough` mode** for **Android build rules**, specifically by **extending the `GatoradeMode` enumeration** within `prelude/decls/android_rules.bzl`. This **new feature** allows for a distinct processing or handling strategy for Android-related build artifacts. The addition of `passthrough` provides greater flexibility in build configurations, enabling downstream systems to utilize this new behavior.
This commit **refactors** the **Android build rules** by introducing a new `GatoradeMode` enum within `prelude/decls/android_rules.bzl`. The `enable_gatorade` attribute in the `android_aar`, `android_binary`, and `android_bundle` rules is updated to use this enum instead of a boolean, providing more expressive and scalable configuration options. This change improves the flexibility of the `gatorade` parameter, allowing for more nuanced control beyond a simple on/off switch. Users of these **Android build rules** will need to update their configurations to leverage the new `GatoradeMode` enum values.
This commit introduces a **new feature** to the **Android build system**, adding the `native_library_merge_linker_args_all` attribute to `android_aar`, `android_binary`, and `android_bundle` rules. This allows developers to specify linker arguments that will be uniformly applied to *all* native merged libraries, significantly simplifying the management of common linker flags across large applications. The new attribute's logic, implemented in `prelude/android/android_binary_native_library_rules.bzl`, ensures that these global arguments are applied before any library-specific `native_library_merge_linker_args`, allowing for targeted overrides. This enhancement improves the scalability and maintainability of linker configurations for complex Android projects.
This commit introduces a **new feature** that allows users to pass **extra linker flags** specifically to the relinker stage of Android builds. It adds a `relinker_extra_args` attribute to the `android_aar`, `android_binary`, and `android_bundle` rules defined in `prelude/decls/android_rules.bzl`. These arguments are then integrated and utilized within the `relink_libraries` function in `prelude/android/android_binary_native_library_rules.bzl`. This enhancement provides greater flexibility for build optimizations, enabling strategies like applying Link-Time Optimization (LTO) only during the final relinking phase, which can **improve build speed** for Android applications.
This commit **re-lands a feature enhancement** for the **`apk_genrule`** in the **`prelude/android`** module, specifically enabling the direct passthrough of `native_libs` for **Android App Bundle (AAB) builds**. It resolves a previous regression by ensuring that **all subtargets are correctly captured** within the `apk_genrule_impl` function. This **improves developer experience** by streamlining the build process for Android applications that incorporate native libraries, eliminating the need to explicitly reference the `android_binary` rule.
This commit **enhances the Buck2 Android build rules** by introducing a **new capability** to directly pass `native_libs` through the `apk_genrule` for **Android App Bundle (AAB) generation**. It modifies the `apk_genrule_impl` function in `prelude/android/apk_genrule.bzl` to include `native_libs` in its `sub_targets`, simplifying the process of incorporating native libraries into AABs. This change improves developer experience by removing the need to explicitly reference `android_binary` rules for native library inclusion. The update particularly benefits `m4a` release builds and includes improved test cases and fixes for Redex integration.
This commit introduces a **new capability** to the **Android build system**, specifically enhancing the `apk_genrule` to properly pass `native_libs` for **Android App Bundle (AAB) targets**. It modifies the `apk_genrule_impl` function in `prelude/android/apk_genrule.bzl` to extract and include native libraries from sub-targets during AAB generation. This change aligns the AAB build path with the existing `android_binary` behavior, which already supported `native_libs` passthrough. The update simplifies the build process for projects utilizing native libraries within AABs, particularly for m4a release builds, by removing the need for manual handling of these dependencies.
This commit introduces a **new capability** to the **Android build system**, specifically enhancing the `apk_genrule`. It now allows `native_libs` to be directly passed through the `apk_genrule`, eliminating the need to explicitly retrieve the `android_binary` rule for building targeted native libraries. This change, primarily in `prelude/android/apk_genrule.bzl`, simplifies the **Android native library development workflow**, making it more convenient for developers. Additionally, debug output for `native_libs` is added in `prelude/android/android_binary_native_library_rules.bzl` under specific conditions to aid in understanding native library resolution.