bazel-build-optimization
🎯SkillHelps you make Bazel, a tool that builds and tests code, faster and easier to manage in very large code projects. It covers setup, sharing build results between machines, custom build rules and fixing build problems.
Installation
npx skills add wshobson/agents --skill bazel-build-optimizationRun it in a terminal; it asks which AI coding tools to install it for (Claude Code, Codex, Cursor and more).
Uses skills.sh · Node.js 22.20+
After installing
Ask for related work and the agent uses it on its own, or call it yourself.
/bazel-build-optimizationInstall by hand
Copy the whole skill folder from GitHub to the place below. Copying only SKILL.md can leave out files the skill uses.
Open the skill folder →- This project
.claude/skills/bazel-build-optimization/ - All projects
~/.claude/skills/bazel-build-optimization/
These paths are for Claude Code. For other tools, the command above puts it in the right place.
What this skill does
Overview
This skill gives an AI assistant proven patterns for using Bazel in large monorepos. Bazel is a tool that builds and tests code. A monorepo is a single repository that holds many projects. The skill explains key files and ideas, such as targets, which are the things Bazel can build.
Key Features
- Set up a Bazel project layout with the right config files.
- Turn on remote caching so machines can reuse each other's build results.
- Split code into small build targets so less needs to be rebuilt after a change.
- Write custom build rules and debug builds that fail.
- Move an existing project over to Bazel.
Who is this for?
It suits engineers working on large company codebases where builds are slow. It also helps teams adopting Bazel who want a short list of do's and don'ts.
Summarized by AI from this skill's SKILL.md. Suggest a better one
SKILL.md
View on GitHub →Optimize Bazel builds for large-scale monorepos. Use when configuring Bazel, implementing remote execution, or optimizing build performance for enterprise codebases.
Bazel Build Optimization
Production patterns for Bazel in large-scale monorepos.
When to Use This Skill
- Setting up Bazel for monorepos
- Configuring remote caching/execution
- Optimizing build times
- Writing custom Bazel rules
- Debugging build issues
- Migrating to Bazel
Core Concepts
1. Bazel Architecture
workspace/
├── WORKSPACE.bazel # External dependencies
├── .bazelrc # Build configurations
├── .bazelversion # Bazel version
├── BUILD.bazel # Root build file
├── apps/
│ └── web/
│ └── BUILD.bazel
├── libs/
│ └── utils/
│ └── BUILD.bazel
└── tools/
└── bazel/
└── rules/
2. Key Concepts
| Concept | Description |
|---|---|
| Target | Buildable unit (library, binary, test) |
| Package | Directory with BUILD file |
| Label | Target identifier //path/to:target |
| Rule | Defines how to build a target |
| Aspect | Cross-cutting build behavior |
Templates and detailed worked examples
Full template library and detailed worked examples live in references/details.md. Read that file when you need the concrete templates.
Best Practices
Do's
- Use fine-grained targets - Better caching
- Pin dependencies - Reproducible builds
- Enable remote caching - Share build artifacts
- Use visibility wisely - Enforce architecture
- Write BUILD files per directory - Standard convention
Don'ts
- Don't use glob for deps - Explicit is better
- Don't commit bazel-* dirs - Add to .gitignore
- Don't skip WORKSPACE setup - Foundation of build
- Don't ignore build warnings - Technical debt
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