Decompose

Do not invoke this skill unless explicitly requested. It is called by /yoink:yoink or run standalone by the user.

Prerequisite: /yoink:curate-tests must have been completed first.

Seed the decomposition queue with the target package:

uv run python ${CLAUDE_SKILL_DIR}/scripts/decomp.py enqueue <PACKAGE_NAME>

Then run the decomposition loop below until the queue is empty.

---

Decomposition Loop

Begin loop. Repeat until the queue is empty.

1. Dequeue

uv run python ${CLAUDE_SKILL_DIR}/scripts/decomp.py dequeue

• If queue is empty then decomposition complete, remove the real library and stop.

  uv remove <PACKAGE_NAME>
  

2. Evaluate

Use the yoink:decomp-evaluator agent to evaluate whether the dequeued library should be kept or decomposed.

Pass input as JSON:

{
  "library_name": "<DEQUEUED_LIBRARY>",
  "package_name": "yoink_<PACKAGE_NAME>"
}

• If Keep then go back to step 1.
• If Decompose then continue to step 3 with the evaluation output.

3. Prepare the sub-package for the implementer agent

Complete these steps IN ORDER before entering the loop.

Exception: When the dequeued item is {original_package} (the first item in the queue), skip steps 3a–3c and go straight to 3d. Baseline verification (3a) was already completed by /yoink:curate-tests, scaffolding (3c) was already done by /yoink:setup, and import rewriting (3b) is a no-op for the original package since there are no sub-package imports to rewrite yet.

a. Verify baseline

Run the top-level generated tests:

uv run ${CLAUDE_PLUGIN_ROOT}/scripts/run_tests.py --project-dir . 2>&1

• If all tests pass then proceed to step b.
• If any test fails then the baseline is broken and must be fixed before proceeding. Investigate the test failures, fix the issues, and re-run the tests until they all pass.

b. Rewrite imports

Swap {sub_package} imports in yoink_{top_package}/ source code to point at yoink_{sub_package}:

uv run ${CLAUDE_PLUGIN_ROOT}/scripts/rewrite_imports.py --package {sub_package} --target-dir yoink_{top_package}

c. Scaffold the sub-package

mkdir -p yoink_{sub_package}
touch yoink_{sub_package}/__init__.py

d. Seed & populate state body

Seed the state file with placeholder values:

"${CLAUDE_SKILL_DIR}/scripts/activate-inner-yoink-loop.sh" --max-iterations 10

e. Populate loop state

Read .claude/decomp_context.md and fill in the PLACEHOLDER values in the JSON block inside .claude/inner-yoink-loop.local.md:

Field	Where to get the value
top_package	{top_package}
sub_package	{sub_package}
category	from decomp_context.md
strategy	from decomp_context.md
functions_to_replace	JSON array of strings from decomp_context.md
reference_material	from decomp_context.md, default: .yoink/reference/{sub_package}/
acceptable_sub_dependencies	JSON array of strings from decomp_context.md

4. Implement & Validate

Use the yoink:decomp-implementer agent to implement the sub-package.

• If completion_promise = DONE then proceed to step 5.
• If completion_promise = MAX_ITERATIONS_REACHED then stop the loop and report back to the user that the maximum number of iterations has been reached.
• If the agent exits without returning DONE then spin up a new yoink:decomp-implementer agent to continue the task.

5. Enqueue new dependencies

Using new_imports from the implementer's output, enqueue external libraries that yoink_<PACKAGE>/ now depends on:

uv run python ${CLAUDE_SKILL_DIR}/scripts/decomp.py enqueue <lib1> <lib2> ...

Only enqueue what yoink_<PACKAGE>/ actually imports, not the full dependency tree of the original library. Use uv run python ${CLAUDE_SKILL_DIR}/scripts/decomp.py deps <library> to see pip dependencies as reference.

Loop back to step 1.