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Apply approved Xcode build optimization changes following best practices, then re-benchmark to verify improvement.
Passed 9 of 17 test cases with the skill, and 4 of 17 without it.
and 8 more in the full report
7 fixed5 passed either way10 still failing0 broke
Tokens, turns and time describe resource use, not a dollar price.
One of 7 test cases the skill fixed. Same model, same prompt, with and without the skill.
We want to pin a branch-tracked Swift package dependency to a stable tag for deterministic builds. What command checks if remote tags exist before updating the package reference?
| Checked | Without skill | With skill |
|---|---|---|
| git ls-remote --tags | Passed | Passed |
| Falls back to pinning a specific revision hash if the upstream repository contains no tags | Missed | Passed |
| Validates dependency resolution using xcodebuild -resolvePackageDependencies before concluding the change | Missed | Passed |
The instructions your model reads when the skill loads.
Use this skill to implement approved build optimization changes and verify them with a benchmark.
The fixer expects one of:
.build-benchmark/optimization-plan.md with checked approval boxes.DEBUG_INFORMATION_FORMAT to dwarf for Debug").When working from an optimization plan, read the approval checklist and implement only the checked items.
Change project.pbxproj values to match the recommendations in build-settings-best-practices.md.
Typical fixes:
DEBUG_INFORMATION_FORMAT = dwarf for DebugSWIFT_COMPILATION_MODE = singlefile for DebugCOMPILATION_CACHE_ENABLE_CACHING = YESEAGER_LINKING = YES for DebugWhen editing project.pbxproj, locate the correct buildSettings block by matching the target name and configuration name. Verify the change with xcodebuild -showBuildSettings after applying.
Fix run script phases that waste time during incremental or debug builds.
test cases passed, vs 4 / 17 without
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