Weave

weave Skill

Use weave when Git line-conflicts are noisy but edits are logically independent.

When to use

• "set up weave"
• "weave setup"
• "preview this merge"
• "why did git conflict on different functions"
• "test merge driver"

Quick commands

# Configure current repo
weave setup

# Preview merge quality before merging
weave preview <branch>

# Execute merge (after setup, git uses weave driver)
git merge <branch>

# Optional: inspect CRDT state if using claims
weave status

Validation checklist

# 1) binaries present
command -v weave weave-driver weave-mcp

# 2) repo config present
git config --local --get-regexp '^merge\.weave\.'

# 3) attributes include merge=weave
grep -n 'merge=weave' .gitattributes

Expected config:

merge.weave.name Entity-level semantic merge
merge.weave.driver weave-driver %O %A %B %L %P

Fast regression test (temp repo)

tmpdir=$(mktemp -d) && cd "$tmpdir"
git init -q
git config user.name test && git config user.email test@example.com
cat > lib.ts <<'EOF'
export function a(x:number){ return x*2 }
export function b(s:string){ return s.length>0 }
EOF
git add lib.ts && git commit -qm base
weave setup >/dev/null

git checkout -qb left
perl -0pi -e 's/x\*2/x*3+1/' lib.ts
git commit -am left -q

git checkout -q @{-1}
git checkout -qb right
perl -0pi -e 's/s\.length>0/s.trim().length>0/' lib.ts
git commit -am right -q

git checkout -q left
git merge --no-ff right

Pass condition: merge completes and git ls-files -u is empty.

Notes

• weave setup updates .gitattributes and local git merge-driver config.
• Keep driver command as weave-driver ... (PATH-resolved) to avoid stale nix-store paths.
• For AI tooling, weave-mcp is available; wire into your MCP client as needed.
• Troubleshooting: references/troubleshooting.md