python-polylith

[Internal sub-skill of `polylith-migrate-orchestrator`. Do not load directly — load `polylith-migrate-orchestrator` first, which drives all phases.] Analyze the project's import graph to find how the original namespace is referenced, choose the namespace-rewrite strategy (shim vs shimless), detect circular imports, and list symbols exported by the original namespace.

[Internal sub-skill of `polylith-migrate-orchestrator`. Do not load directly — load `polylith-migrate-orchestrator` first, which drives all phases.] Update imports in the new base location to reference the new namespace instead of the original namespace.

[Internal sub-skill of `polylith-migrate-orchestrator` (optional, runs only when opted in during `polylith-migrate-discover`). Do not load directly — load `polylith-migrate-orchestrator` first.] Align the project's linter and formatter with the **workspace's** configured tool (whatever it is — ruff, black+isort+flake8, pylint, etc.). Removes project-specific config and consolidates rules into the workspace root.

[Internal sub-skill of `polylith-migrate-orchestrator` (optional, runs only when opted in during `polylith-migrate-discover`). Do not load directly — load `polylith-migrate-orchestrator` first.] Convert the project's `pyproject.toml` to PEP 621/uv-workspaces format and register it as a uv-workspace member. **Opinionated about uv** — only applies when the workspace itself uses uv. Skip otherwise.

[Internal sub-skill of `polylith-migrate-orchestrator` (optional, runs only when opted in during `polylith-migrate-discover`). Do not load directly — load `polylith-migrate-orchestrator` first.] Align the project's type checker with the **workspace's** configured tool (whatever it is — mypy, pyright, ty, etc.). Removes project-specific config and consolidates settings into the workspace root.

[Internal sub-skill of `polylith-migrate-orchestrator` (optional, runs only when opted in during `polylith-migrate-discover`). Do not load directly — load `polylith-migrate-orchestrator` first.] Identify and execute controlled deduplication of code during migration (if the user opts in).

[Internal sub-skill of `polylith-migrate-orchestrator`. Do not load directly — load `polylith-migrate-orchestrator` first, which drives all phases.] Define the criteria for completing the migration process.

[Internal sub-skill of `polylith-migrate-orchestrator`. Do not load directly — load `polylith-migrate-orchestrator` first, which drives all phases.] Detect and report circular imports introduced by the namespace migration.

[Internal sub-skill of `polylith-migrate-orchestrator`. Do not load directly — load `polylith-migrate-orchestrator` first, which drives all phases.] Create `migration/<PROJECT>/state.md` and `migration/<PROJECT>/manifest.md` by inspecting the existing project under `projects/<PROJECT>/`.

[Internal sub-skill of `polylith-migrate-orchestrator`. Do not load directly — load `polylith-migrate-orchestrator` first, which drives all phases.] Distribute app-wiring code from the residual component into the appropriate bases and shared components.

[Internal sub-skill of `polylith-migrate-orchestrator`. Do not load directly — load `polylith-migrate-orchestrator` first, which drives all phases.] Extract foundational modules (e.g., `consts.py`, `exceptions.py`, or similar) from the residual component into standalone components.

[Internal sub-skill of `polylith-migrate-orchestrator`. Do not load directly — load `polylith-migrate-orchestrator` first, which drives all phases.] Extract all application code from `projects/<PROJECT>/` into a temporary migration base.

[Internal sub-skill of `polylith-migrate-orchestrator`. Do not load directly — load `polylith-migrate-orchestrator` first, which drives all phases.] Generate a compatibility shim that re-exports all symbols from the new base location to maintain backward compatibility during namespace migration.

[Internal sub-skill of `polylith-migrate-orchestrator`. Do not load directly — load `polylith-migrate-orchestrator` first, which drives all phases.] Shrink the temporary migration base into thin base(s) + one big component. Bases contain only entrypoints/wiring, while the big component contains everything else.

[Internal sub-skill of `polylith-migrate-orchestrator`. Do not load directly — load `polylith-migrate-orchestrator` first, which drives all phases.] Identify and isolate shared and project-specific logic in monolithic components (e.g., `models`, `schemas`, or similar).

[ENTRY POINT] Load this skill first when the user asks to migrate a non-Polylith Python project to Polylith (e.g. "migrate `projects/<name>` to Polylith"). Drives the full migration workflow plus optional tooling conversions; do not load any other `polylith-migrate-*` skill directly — they are sub-skills this orchestrator invokes.

[Internal sub-skill of `polylith-migrate-orchestrator`. Do not load directly — load `polylith-migrate-orchestrator` first, which drives all phases.] Clean up the project subfolder and consolidate dependencies after extracting application code into bases.

[Internal sub-skill of `polylith-migrate-orchestrator`. Do not load directly — load `polylith-migrate-orchestrator` first, which drives all phases.] Restructure unit tests to align with the workspace's Polylith theme.

[Internal sub-skill of `polylith-migrate-orchestrator`. Do not load directly — load `polylith-migrate-orchestrator` first, which drives all phases.] Resolve circular imports by updating imports in the new base location to avoid referencing the compatibility shim.

[Internal sub-skill of `polylith-migrate-orchestrator`. Do not load directly — load `polylith-migrate-orchestrator` first, which drives all phases.] Split the big component (`components/<top_ns>/<INITIAL_BASE_NAME>/`) into multiple focused components.

[Internal sub-skill of `polylith-migrate-orchestrator`. Do not load directly — load `polylith-migrate-orchestrator` first, which drives all phases.] Split monolithic `core.py` files in shared components into domain-focused modules.

[Internal sub-skill of `polylith-migrate-orchestrator`. Do not load directly — load `polylith-migrate-orchestrator` first, which drives all phases.] Update test files to import from the compatibility shim or the new namespace, ensuring test stability after namespace migration.

[Internal sub-skill of `polylith-migrate-orchestrator`. Do not load directly — load `polylith-migrate-orchestrator` first, which drives all phases.] Verify that the migration did not break the project by running test discovery, checking for circular imports, and ensuring the compatibility shim covers all necessary symbols.

Create a Polylith base with `poly create base` — the entry point of a deployable application (HTTP API, CLI, message-queue consumer, AWS Lambda handler, GCP Cloud Function, scheduled job). Use when the user wants to add a service, API, endpoint, handler, or any new entry point to a Polylith workspace.

Safely remove a Polylith brick (component or base) from the workspace. Use when the user wants to delete, remove, or tear down a component or base.

Validate a Polylith workspace with `poly check` — the canonical CI gate. Verifies brick imports against project `pyproject.toml`s, third-party library declarations vs. the lock file, and (under `--strict`) cross-project version consistency. Exits 1 on failure. Use when the user wants to lint, validate, verify, or CI-gate a Polylith workspace.

Create a Polylith component with `poly create component` — a reusable, isolated brick implementing business logic, a feature, a domain module, or a capability. Use when adding non-entry-point code that bases or other components will import.

Provides foundational knowledge about Polylith architecture, including the glossary (bases, components, projects, workspaces), theme layouts, and package manager mapping. Use this when you need to understand Polylith terminology or how the repository is structured conceptually before taking action.

Add or manage third-party dependencies in a Polylith workspace. Use when the user wants to install a new library (e.g., requests, fastapi) for a brick or project.

Visualize **brick × brick** dependencies with `poly deps` — find circular dependencies, inspect a brick's public interface, and detect interface-bypass violations. Use for "what depends on what", "circular deps", "interface violation". For brick × project usage, use `polylith-workspace-inspection`.

List Polylith bricks whose **implementation** changed since a git tag using `poly diff`. Use for release notes, selective deploys ("which projects need rebuilding?"), and PR scope review. For TEST-code diffs, use `polylith-testing` instead.

Inspect third-party libraries used per Polylith project with `poly libs`. Use when the user wants to see dependency usage, audit version drift across projects, find which projects use a given library, or compare library declarations vs. the lock file. Read-only — for a CI gate use `polylith-check` instead.

Create a deployable Polylith project with `poly create project` — a lightweight `pyproject.toml` under `projects/<name>/` that references bricks for deployment as a Docker image, wheel, AWS Lambda, GCP Cloud Function, or other artifact. Use when the user wants a new deployable, service, microservice, or release target.

Run `poly sync` to update each project's `[tool.polylith.bricks]` table with the bricks actually imported. Use this whenever a brick is added, removed, or its imports change — and before `poly check` or a release.

List Polylith bricks and projects affected by **test-code** changes since a git tag using `poly test diff`. Use for selective test runs in CI ("which tests do I need to run?"). For implementation-code diffs, use `polylith-diff` instead.

Show **brick × project usage** with `poly info` — which projects use which bricks, plus workspace counts. Use for "workspace overview", "which projects use X", "find orphaned bricks". For brick-to-brick dependencies, use `polylith-dependency-visualization`.

Scaffold a new Polylith workspace with `poly create workspace`. Use when the user wants to initialize / set up / start / bootstrap Polylith from scratch in a directory (creates `workspace.toml` and the `bases/`, `components/`, `projects/`, `development/` directories).