Migrate From NeMo Flow To NeMo Relay

Use this skill when a user has existing NeMo Flow code or documentation and wants it converted to NeMo Relay. Treat the migration as a mechanical rename plus language-specific validation, not a behavior rewrite. Keep compatibility exceptions explicit before applying broad renames.

Default Workflow

1. Inspect the working tree and identify touched surfaces: Rust, Python, Node.js, Go, C FFI, CLI/config, docs, or integrations.
2. Resolve SKILL_DIR to the absolute directory containing this SKILL.md and TARGET_PATH to the source repository or target project. Run the bundled helper in dry-run mode before editing: python3 "$SKILL_DIR/scripts/migrate_from_nemo_flow.py" "$TARGET_PATH" --rename-paths
3. Review the reported text edits, path renames, and legacy project configuration warnings with the user. Do not migrate project-local .nemo-flow/config.toml or .nemo-flow/plugins.toml into .nemo-relay. Move those settings manually to a supported user or explicit configuration path after review.
4. Obtain explicit confirmation for the resolved target root, then rerun with --write, --rename-paths, and --confirm-root "$TARGET_PATH".
5. Apply language-specific cleanup for package manager lockfiles, generated artifacts, and public API examples.
6. Search for remaining Flow names and verify the affected language surfaces.

Mechanical Rename Map

• Brand and repository: NeMo Flow -> NeMo Relay, NeMo-Flow -> NeMo-Relay
• Python: nemo-flow -> nemo-relay, nemo_flow -> nemo_relay, python/nemo_flow -> python/nemo_relay
• Rust: nemo-flow -> nemo-relay, nemo-flow-adaptive -> nemo-relay-adaptive, nemo_flow:: -> nemo_relay::
• Node.js: nemo-flow-node -> nemo-relay-node, including related entry points such as /typed, /plugin, /adaptive, and /observability
• Go: github.com/NVIDIA/NeMo-Flow/go/nemo_flow -> github.com/NVIDIA/NeMo-Relay/go/nemo_relay, package aliases nemo_flow -> nemo_relay, and source directories go/nemo_flow -> go/nemo_relay
• C FFI: nemo_flow.h -> nemo_relay.h, nemo_flow_* -> nemo_relay_*, NemoFlow* -> NemoRelay*, and NEMO_FLOW_* -> NEMO_RELAY_*
• CLI/config: nemo-flow -> nemo-relay, ~/.config/nemo-flow -> ~/.config/nemo-relay, NEMO_FLOW_* -> NEMO_RELAY_*, and x-nemo-flow-* -> x-nemo-relay-*. Do not blindly rename project-local .nemo-flow/config.toml or .nemo-flow/plugins.toml into .nemo-relay; those files require manual migration to a supported user or explicit configuration path.

Do not replace bare flow, Flow, or FlowError. Those can be domain words or intentional compatibility names.

Language Cleanup

• Python: update pyproject.toml, imports, type stubs, integration package paths, extras, and native module names. Regenerate or refresh lockfiles with the user's package workflow after source edits.
• Rust: update Cargo.toml crate names, workspace dependencies, package references, and use nemo_relay::... imports. Let Cargo regenerate Cargo.lock when dependencies changed.
• Node.js: update package.json, workspace names, package-lock entries, native addon artifact names, and imports from nemo-relay-node. Run the package manager to refresh locks.
• Go: update go.mod, import paths, package declarations, aliases, and any local directory layout under go/nemo_relay.
• C FFI: update header includes, exported symbol names, status and callback type names, macro constants, loader paths, and downstream bindings.
• Docs and examples: update badges, package install commands, repository links, hosted docs URLs, CLI commands, config paths, and integration names.

Automation Helper

Use $SKILL_DIR/scripts/migrate_from_nemo_flow.py for first-pass edits. The helper:

• runs as a dry run unless --write is passed
• skips common vendor, build, cache, and generated directories
• skips lockfiles unless --include-lockfiles is passed
• skips symbolic links and credential-bearing dotenv files
• detects project-local .nemo-flow/config.toml and .nemo-flow/plugins.toml, leaves them unchanged, and reports that they require manual migration to a supported user or explicit configuration path
• requires the reviewed target root to be repeated with --confirm-root before writing, and refuses filesystem-root or home-directory writes
• anchors writes and renames to verified directory handles without following symbolic links, and refuses write mode on platforms that cannot provide those guarantees
• uses atomic no-replace path renames and exits nonzero when any requested mutation fails
• can report or perform path renames with --rename-paths
• rewrites only explicit NeMo Flow identifiers, package names, repository names, config paths, headers, environment variables, and FFI type prefixes

The helper does not classify arbitrary JSON, YAML, TOML, or INI files as secret. Review every configuration file in the dry-run report. If any reported file is unreviewed or credential-bearing, do not use --write on that root. Apply the reviewed changes manually and leave secret-bearing files untouched without reading or displaying their values.

Set shell-safe absolute paths before invoking the helper. Replace the example values with the resolved skill directory and either the source repository or the user's target project:

SKILL_DIR="/resolved/absolute/path/to/nemo-relay-migrate-from-flow"
TARGET_PATH="/resolved/absolute/path/to/target-project"

python3 "$SKILL_DIR/scripts/migrate_from_nemo_flow.py" "$TARGET_PATH" --rename-paths
python3 "$SKILL_DIR/scripts/migrate_from_nemo_flow.py" "$TARGET_PATH" \
  --write --rename-paths --confirm-root "$TARGET_PATH"

Use --include-lockfiles only when the user wants lockfiles edited directly; otherwise regenerate them with Cargo, uv/pip, npm, or Go tooling.

Verification

• Search for remaining explicit Flow identifiers: rg -n "NeMo Flow|NeMo-Flow|nemo_flow|nemo-flow|NEMO_FLOW|NemoFlow|nemo_flow\\.h|nemo_flow_"
• Run targeted tests for every affected language surface.
• For Rust changes, run cargo test or the repository's Rust test recipe.
• For Python changes, run the relevant import check and tests in the target environment.
• For Node.js changes, run package install, type checks, and package tests.
• For Go changes, run go test ./... from the updated module.
• For docs-only migrations, build or link-check docs if the site navigation, install commands, or API references changed.

Related Skills

• nemo-relay-get-started
• nemo-relay-instrument-calls
• nemo-relay-debug-runtime-integration