About

Your NanoClaw fork drifts from upstream as you customize it. This skill pulls upstream changes into your install without losing your modifications.

Run /update-nanoclaw in Claude Code.

How it works

Preflight: checks for clean working tree (git status --porcelain). If upstream remote is missing, asks you for the URL (defaults to https://github.com/nanocoai/nanoclaw.git) and adds it. Detects the upstream branch name (main or master).

Backup: creates a timestamped backup branch and tag (backup/pre-update-<hash>-<timestamp>, pre-update-<hash>-<timestamp>) before touching anything. Safe to run multiple times.

Preview: runs git log and git diff against the merge base to show upstream changes since your last sync. Groups changed files into categories:

• Skills (.claude/skills/): unlikely to conflict unless you edited an upstream skill
• Host source (src/): may conflict if you modified the same files
• Container (container/): triggers container rebuild
• Build/config (package.json, pnpm-lock.yaml, tsconfig*.json): lockfile changes trigger dep install

Update paths (you pick one):

• merge (default): git merge upstream/<branch>. Resolves all conflicts in one pass.
• cherry-pick: git cherry-pick <hashes>. Pull in only the commits you want.
• rebase: git rebase upstream/<branch>. Linear history, but conflicts resolve per-commit.
• abort: just view the changelog, change nothing.

Conflict preview: before merging, runs a dry-run (git merge --no-commit --no-ff) to show which files would conflict. You can still abort at this point.

Conflict resolution: opens only conflicted files, resolves the conflict markers, keeps your local customizations intact.

Validation: runs pnpm run build and pnpm test. If container files changed, also runs the container typecheck and ./container/build.sh.

Breaking changes check: after validation, reads CHANGELOG.md for any [BREAKING] entries introduced by the update. If found, shows each breaking change and offers to run the recommended skill to migrate.

Rollback

The backup tag is printed at the end of each run:

git reset --hard pre-update-<hash>-<timestamp>

Backup branch backup/pre-update-<hash>-<timestamp> also exists.

Token usage

Only opens files with actual conflicts. Uses git log, git diff, and git status for everything else. Does not scan or refactor unrelated code.

Goal

Help a user with a customized NanoClaw install safely incorporate upstream changes without a fresh reinstall and without blowing tokens.

Operating principles

• Never proceed with a dirty working tree.
• Always create a rollback point (backup branch + tag) before touching anything.
• Prefer git-native operations (fetch, merge, cherry-pick). Do not manually rewrite files except conflict markers.
• Default to MERGE (one-pass conflict resolution). Offer REBASE as an explicit option.
• Keep token usage low: rely on git status, git log, git diff, and open only conflicted files.

Step 0: Preflight (stop early if unsafe)

Run:

• git status --porcelain If output is non-empty:
• Tell the user to commit or stash first, then stop.

Confirm remotes:

• git remote -v If upstream is missing:
• Ask the user for the upstream repo URL (default: https://github.com/nanocoai/nanoclaw.git).
• Add it: git remote add upstream <user-provided-url>
• Then: git fetch upstream --prune

Determine the upstream branch name:

• git branch -r | grep upstream/
• If upstream/main exists, use main.
• If only upstream/master exists, use master.
• Otherwise, ask the user which branch to use.
• Store this as UPSTREAM_BRANCH for all subsequent commands. Every command below that references upstream/main should use upstream/$UPSTREAM_BRANCH instead.

Fetch:

• git fetch upstream --prune

Step 1: Create a safety net

Capture current state:

• HASH=$(git rev-parse --short HEAD)
• TIMESTAMP=$(date +%Y%m%d-%H%M%S)

Create backup branch and tag (using timestamp to avoid collisions on retry):

• git branch backup/pre-update-$HASH-$TIMESTAMP
• git tag pre-update-$HASH-$TIMESTAMP

Save the tag name for later reference in the summary and rollback instructions.

Step 2: Preview what upstream changed (no edits yet)

Compute common base:

• BASE=$(git merge-base HEAD upstream/$UPSTREAM_BRANCH)

Show upstream commits since BASE:

• git log --oneline $BASE..upstream/$UPSTREAM_BRANCH

Show local commits since BASE (custom drift):

• git log --oneline $BASE..HEAD

Show file-level impact from upstream:

• git diff --name-only $BASE..upstream/$UPSTREAM_BRANCH

Bucket the upstream changed files:

• Skills (.claude/skills/): unlikely to conflict unless the user edited an upstream skill
• Host source (src/): may conflict if user modified the same files
• Container (container/): triggers container rebuild (+ typecheck if agent-runner/src/ changed)
• Build/config (package.json, pnpm-lock.yaml, tsconfig*.json): lockfile changes trigger dep install
• Other: docs, tests, setup scripts, misc

Large drift check: If the upstream commit count and age suggest the user has a lot of catching up to do, mention that /migrate-nanoclaw might be a better fit — it extracts customizations and reapplies them on clean upstream instead of merging. Offer it as an option but don't push.

Present these buckets to the user and ask them to choose one path using AskUserQuestion:

• A) Full update: merge all upstream changes
• B) Selective update: cherry-pick specific upstream commits
• C) Abort: they only wanted the preview
• D) Rebase mode: advanced, linear history (warn: resolves conflicts per-commit)

If Abort: stop here.

Step 3: Conflict preview (before committing anything)

If Full update or Rebase:

• Dry-run merge to preview conflicts. Run these as a single chained command so the abort always executes:

  git merge --no-commit --no-ff upstream/$UPSTREAM_BRANCH; git diff --name-only --diff-filter=U; git merge --abort
  

• If conflicts were listed: show them and ask user if they want to proceed.
• If no conflicts: tell user it is clean and proceed.

Step 4A: Full update (MERGE, default)

Run:

• git merge upstream/$UPSTREAM_BRANCH --no-edit

If conflicts occur:

• Run git status and identify conflicted files.
• For each conflicted file:
  • Open the file.
  • Resolve only conflict markers.
  • Preserve intentional local customizations.
  • Incorporate upstream fixes/improvements.
  • Do not refactor surrounding code.
  • git add <file>
• When all resolved:
  • If merge did not auto-commit: git commit --no-edit

Step 4B: Selective update (CHERRY-PICK)

If user chose Selective:

• Recompute BASE if needed: BASE=$(git merge-base HEAD upstream/$UPSTREAM_BRANCH)
• Show commit list again: git log --oneline $BASE..upstream/$UPSTREAM_BRANCH
• Ask user which commit hashes they want.
• Apply: git cherry-pick <hash1> <hash2> ...

If conflicts during cherry-pick:

• Resolve only conflict markers, then:
  • git add <file>
  • git cherry-pick --continue If user wants to stop:
  • git cherry-pick --abort

Step 4C: Rebase (only if user explicitly chose option D)

Run:

• git rebase upstream/$UPSTREAM_BRANCH

If conflicts:

• Resolve conflict markers only, then:
  • git add <file>
  • git rebase --continue If it gets messy (more than 3 rounds of conflicts):
  • git rebase --abort
  • Recommend merge instead.

Step 4.5: Install dependencies (if lockfiles changed)

Check if the merge changed any lockfiles or package manifests:

• git diff <backup-tag-from-step-1>..HEAD --name-only | grep -E '^(pnpm-lock\.yaml|package\.json)$'
  • If matched: pnpm install
• git diff <backup-tag-from-step-1>..HEAD --name-only | grep -E '^container/agent-runner/(bun\.lock|package\.json)$'
  • If matched AND command -v bun succeeds: cd container/agent-runner && bun install
  • If bun is not