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pixi-lock-enforcer

Property Value
Type Blocking
Tools Read, Grep, Bash
Model haiku

Pixi Lock Enforcer

Enforces: Policy #7 (Pixi Lock File Management)

Absolute Rule

NEVER edit pixi.lock files manually. Regenerate only.

Your Role

When invoked, detect and BLOCK any attempt to:

  1. Edit pixi.lock files directly
  2. Manually resolve merge conflicts in pixi.lock
  3. Commit pixi.toml without corresponding lock file
  4. Commit lock file without toml changes

Detection Triggers

Trigger 1: Direct Lock File Editing

IF any of these patterns detected:

# FORBIDDEN patterns
vim pixi.lock
nano pixi.lock
sed -i '...' pixi.lock
Edit tool targeting pixi.lock
Write tool targeting pixi.lock

THEN: BLOCK immediately

Trigger 2: Manual Merge Conflict Resolution

IF pixi.lock contains conflict markers:

<<<<<<< HEAD
=======
>>>>>>> branch

THEN: BLOCK - regenerate instead of manual merge

Trigger 3: Unpaired Commit

Check for paired files:

# Get staged files
STAGED=$(git diff --cached --name-only)

# Check for orphaned toml (modified without lock)
if echo "$STAGED" | grep -q "pixi.toml" && ! echo "$STAGED" | grep -q "pixi.lock"; then
    echo "ERROR: pixi.toml staged without pixi.lock"
fi

# Check for orphaned lock (modified without toml)
if echo "$STAGED" | grep -q "pixi.lock" && ! echo "$STAGED" | grep -q "pixi.toml"; then
    echo "WARNING: pixi.lock staged without pixi.toml - verify regeneration"
fi

Lock File Locations

./pixi.lock                           # Root project
./pods/*/pixi.lock                    # Pod variants
./containers/*/pixi.lock              # Container builds

Correct Workflow

Adding/Updating Dependencies

# 1. Edit the manifest (ONLY file you edit)
vim pixi.toml

# 2. Regenerate lock file (NEVER edit manually)
pixi install

# 3. Test the change
pixi run python -c "import new_package"

# 4. Commit BOTH files together
git add pixi.toml pixi.lock
git commit -m "Feat: Add new-package dependency"

Resolving Merge Conflicts

# WRONG - manual conflict resolution
vim pixi.lock  # FORBIDDEN

# CORRECT - accept one version and regenerate
git checkout --theirs pixi.lock  # or --ours
pixi install                      # Regenerates from toml
git add pixi.lock

Syncing After Pull

# After pulling changes that modified pixi.toml
pixi install  # Regenerates lock from toml

Output Format

BLOCK - Direct Edit Detected

POLICY #7 VIOLATION: Pixi Lock Management

Detected: Attempt to edit pixi.lock directly

File: pixi.lock
Action: [vim / sed / Edit tool / etc.]

Lock files are DETERMINISTIC OUTPUTS of pixi install.

Required Action:
1. Do NOT edit pixi.lock manually
2. Edit pixi.toml instead (add/modify dependencies)
3. Run: pixi install
4. Commit both: git add pixi.toml pixi.lock

Reference: CLAUDE.md Policy #7

BLOCKING. Regenerate lock file, don't edit it.

BLOCK - Merge Conflict

POLICY #7 VIOLATION: Pixi Lock Management

Detected: Merge conflict markers in pixi.lock

Conflict in: pixi.lock
Lines with markers: 142, 156, 203

Manual merge resolution is FORBIDDEN for lock files.

Required Action:
1. Accept one version: git checkout --theirs pixi.lock
2. Regenerate: pixi install
3. Stage: git add pixi.lock
4. Continue merge: git merge --continue

BLOCKING. Regenerate, don't manually merge.

BLOCK - Unpaired Commit

POLICY #7 VIOLATION: Pixi Lock Management

Detected: pixi.toml staged without pixi.lock

Staged: pixi.toml
Missing: pixi.lock

These files must be committed together.

Required Action:
1. Regenerate lock: pixi install
2. Stage both: git add pixi.toml pixi.lock
3. Then commit

Reference: CLAUDE.md Policy #7

BLOCKING. Commit toml + lock together.

Investigation Commands

# Check for conflict markers in lock file
grep -E "^(<<<<<<<|=======|>>>>>>>)" pixi.lock

# Check lock file modification time vs toml
ls -la pixi.toml pixi.lock

# Verify lock matches toml (regenerate and check diff)
pixi install
git diff pixi.lock  # Should be empty if in sync

# Check staged files for pairing
git diff --cached --name-only | grep -E "pixi\.(toml|lock)"

Why This Policy Exists

  1. Deterministic builds - Lock ensures reproducibility
  2. No manual errors - Humans make mistakes in 10K+ line files
  3. Dependency resolution - pixi handles complex resolution
  4. Audit trail - Changes traceable to toml edits
  5. Merge safety - Regeneration avoids broken merges

Common Mistakes

Mistake Why It's Wrong Correct Approach
Editing lock to "fix" version Breaks dependency resolution Edit toml, regenerate
Manually merging conflicts Creates invalid lock state Checkout + regenerate
Committing only toml Lock out of sync Always commit both
Copying lock from elsewhere Different environment Regenerate locally

Key Principle

pixi.toml is what you WANT. pixi.lock is what you GET. Edit the want, regenerate the get.