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ln-781-build-verifier
Type: L3 Worker Category: 7XX Project Bootstrap Parent: ln-780-bootstrap-verifier
Purpose
Detects project types, restores dependencies, executes builds, and verifies successful compilation.
Scope:
- Auto-detect project types from file markers
- Restore dependencies using appropriate package manager
- Execute build commands for each project
- Verify build artifacts exist
Out of Scope:
- Running tests (handled by ln-782)
- Container operations (handled by ln-783)
- Workflow orchestration (handled by ln-780)
When to Use
| Scenario | Use This Skill | |----------|---------------| | Called by ln-780 orchestrator | Yes | | Standalone build verification | Yes | | CI/CD pipeline build step | Yes | | Test execution needed | No, use ln-782 |
Workflow
Step 1: Detect Project Types
Scan project root for type markers.
| Marker File | Project Type | Build System | |------------|--------------|--------------| | package.json | Node.js/Frontend | npm/yarn/pnpm | | *.csproj | .NET | dotnet | | setup.py / pyproject.toml | Python | pip/poetry | | go.mod | Go | go build | | Cargo.toml | Rust | cargo | | pom.xml | Java/Maven | mvn | | build.gradle | Java/Gradle | gradle |
Step 2: Restore Dependencies
For each detected project, restore dependencies before building.
| Project Type | Dependency Restoration | |--------------|----------------------| | Node.js | Install packages from lock file | | .NET | Restore NuGet packages | | Python | Install from requirements or pyproject | | Go | Download modules | | Rust | Fetch crates |
Step 3: Build Projects
Execute build for each project type in Release/Production mode.
| Project Type | Build Mode | Expected Outcome | |--------------|-----------|------------------| | Node.js | Production | Bundled assets in dist/ or build/ | | .NET | Release | Compiled DLLs in bin/Release/ | | Python | Editable install | Package installed in environment | | Go | Production | Compiled binary | | Rust | Release | Optimized binary in target/release/ |
Step 4: Verify Build Artifacts
Confirm build outputs exist.
| Project Type | Artifact Check | |--------------|---------------| | Node.js | dist/ or build/ directory exists, contains files | | .NET | DLL files in bin/Release/{framework}/ | | Python | Package importable | | Go | Binary executable exists | | Rust | Binary in target/release/ |
Step 5: Report Results
Return structured results to orchestrator.
Result Structure:
| Field | Description | |-------|-------------| | projectName | Name of the project | | projectType | Detected type (nodejs, dotnet, python, etc.) | | status | success / failed | | duration | Build time in seconds | | outputPath | Path to build artifacts | | errorMessage | Error details if failed |
Error Handling
| Error Type | Recovery Action | |------------|----------------| | Dependency restore failed | Check network, verify lock file integrity | | Compilation errors | Log full error output, report as failed | | Missing build tool | Report required tool installation | | Timeout | Report timeout, suggest increasing limit |
Critical Rules
- Always restore dependencies first - builds may fail without fresh dependencies
- Use production/release mode - development builds may hide issues
- Verify artifacts exist - successful exit code is not sufficient
- Report all projects - include both successful and failed builds
Definition of Done
- [ ] All project types detected
- [ ] Dependencies restored for each project
- [ ] Build executed for each project
- [ ] Artifacts verified to exist
- [ ] Results returned to orchestrator
Reference Files
- Parent:
../ln-780-bootstrap-verifier/SKILL.md
Version: 2.0.0 Last Updated: 2026-01-10