Awesome Bazel

{Fast, Correct} - Choose two

Bazel is an open-source build and test tool similar to Make, Maven, and Gradle. It uses a human-readable, high-level build language. Bazel supports projects in multiple languages and builds outputs for multiple platforms. Bazel supports large codebases across multiple repositories, and large numbers of users. (via docs)

A curated list of Bazel rules, tooling and resources.

Have something to contribute or discuss? Open a pull request or create an issue.

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Contents

• Rules
• Tooling
  • Starlark
  • Migration
  • Editor plugins
  • Misc
• Resources
  • Tutorials
  • Projects
  • Articles
  • Videos
  • Slides
  • Blogs
  • Community
  • Misc

Rules

Language/Platform	Repository/Documentation
.NET (C#, Nuget)	bazelbuild/rules_dotnet
Android	bazelbuild/rules_android quittle/bazel_android_sdk_downloader : Drop-in replacement for android_sdk_repository to automatically download the Android SDK.
Apple (iOS, macOS, tvOS, watchOS)	bazelbuild/rules_apple
ANTLR	marcohu/rules_antlr
ARM Mbed OS	mjbots/rules_mbed
Bison	jmillikin/rules_bison
BOSH	xoebus/rules_bosh
C++	https://docs.bazel.build/versions/master/be/c-cpp.html nelhage/rules_boost: Rules for Boost C++ libraries
Closure	bazelbuild/rules_closure
CMake	bazelbuild/rules_foreign_cc
CocoaPods	pinterest/PodToBUILD
D	bazelbuild/rules_d
Dart	dart-lang/bazel
Docker	bazelbuild/rules_docker rmohr/rules_container_rpm: Install RPMs without a container daemon with bazel
ECS	dan-compton/ecsonnet
Emscripten	ribrdb/rules_emscripten
Flex	jmillikin/rules_flex
Go	bazelbuild/rules_go Gazelle: Generate Bazel BUILD files for Go related_projects update-repos: Tool in Gazelle for adding Go dependencies as `go_repository` to WORKSPACE ActiveState/rules_vendor: Bazel support for packaging Go vendored dependencies jmhodges/bazel_gomock: Support for generating code with `mockgen`
GWT	bazelbuild/rules_gwt
Haskell	tweag/rules_haskell FormationAI/hazel: Generate rules for third-party Haskell dependencies google/cabal2bazel: Import Cabal packages from Hackage as Bazel packages
Homebrew	tmc/rules_homebrew
Hugo	stackb/rules_hugo
Idris	BryghtWords/rules_idris
Java	https://docs.bazel.build/versions/master/be/java.html bazelbuild/tools_jvm_autodeps (Jadep): Generate BUILD files automatically for an existing Java project with class dependency analysis.
Kotlin	bazelbuild/rules_kotlin
Kubernetes	bazelbuild/rules_k8s
LaTeX	ProdriveTechnologies/bazel-latex
LLVM toolchain	vsco/bazel-toolchains grailbio/bazel-toolchain
M4	jmillikin/rules_m4
Maven	johnynek/bazel-deps: Generate Bazel dependencies transitively for Maven artifacts, with Scala support. pubref/rules_maven bazelbuild/gmaven_rules: Repository rules for Maven artifacts hosted on Google Maven repository bazelbuild/migration-tooling: Migrate an existing Maven project to Bazel jin/rules_maven: A lightweight Bazel repository rule for fetching transitive Maven artifacts using Coursier menny/bazel-mvn-deps: A simple Maven dependency graph generator for Bazel
Maya	mdilena/bazel-maya
Nixpkgs	tweag/rules_nixpkgs
Node.js / JavaScript	bazelbuild/rules_nodejs dropbox/rules_node pubref/rules_node zenclabs/bazel-javascript vistarmedia/rules_js
OCaml	jin/rules_ocaml
OCI Containers	guymers/bazel_rules_container guymers/containers_by_bazel
OpenAPI/Swagger	meetup/rules_openapi
Pandoc	ProdriveTechnologies/bazel-pandoc
PHP	kburnik/php_codebase
Protobuf	https://docs.bazel.build/versions/master/be/protocol-buffer.html
Purescript	felixmulder/rules_purescript
Python	https://docs.bazel.build/versions/master/be/python.html bazelbuild/rules_python benley/rules_pex TriggerMail/rules_pyz: Python rules with PyPI package support georgeliaw/rules_wheel: Rules for building Python wheels tuomasr/pazel: Generate Bazel BUILD files for Python weisi/bazel_for_gcloud_python: Rules to build Python 3 and deploy to Google App Engine and Google Cloud Functions apt-itude/rules_pip: Rules for pip requirements files
Ragel	jmillikin/rules_ragel
R	grailbio/rules_r
ReasonML, BuckleScript	ostera/rules_reason
Ruby	yugui/rules_ruby
Rust	bazelbuild/rules_rust google/cargo-raze: Generate Bazel BUILD files for Rust Crates
Sass	bazelbuild/rules_sass
Scala	bazelbuild/rules_scala higherkindness/rules_scala
Swift	bazelbuild/rules_swift
Twirl	lucidsoftware/rules_twirl
TypeScript	bazelbuild/rules_typescript sconover/rules_multi_tsc: Bazel rules that support breaking a typescript codebase into small, independently-compilable libraries.
Web (HTML, CSS, JS, assets)	quittle/rules_web

Tooling

General

• bazelbuild/bazel-watcher - Automatically run Bazel commands when source files change
• nadirizr/dazel - Run Bazel inside a Docker container via a seamless proxy
• spotify/bazel-tools - Spotify's production tools for dealing with very large Bazel-managed repositories.
• atlassian/bazel-tools - Atlassian's reusable bits for Bazel
• gerrit/bazlets - Gerrit's re-usable building blocks for Bazel build tool
• Bazel Code Search - Browse Bazel's codebase with cross references.
• heroku-buildpack-bazel - Heroku buildpack for Bazel
• hchauvin/bazel-coverage-report - A multi-language coverage report generator for Bazel
• bazel-arcanist - Integration with Arcanist with arc test and arc lint
• Asana/bazeltsc - TypeScript compiler that knows how to run as a Bazel persistent worker
• bazelbuild/sandboxfs - A virtual file system for sandboxing
• JetBrains/teamcity-bazel-plugin - TeamCity plugin for Bazel (blogpost)
• philwo/bazelisk - A user-friendly launcher for Bazel

Starlark

Starlark (formerly called Skylark) is Bazel's domain-specific language for writing BUILD definitions and rules.

• Official documentation
• Language description
• Starlark in Go
• Starlark in Rust
• Skydoc - Starlark documentation generator
• Skylib - Common useful functions for writing custom build rules with Starlark
• Bazel Common Libraries - Common functionality for Google's open-source libraries that are built with Bazel.

Remote caching and execution

• bazel-remote - A remote cache for Bazel using HTTP/1.1 with --remote_rest_cache
• bazelbuild/bazel-buildfarm - Self-hosted remote caching and execution service
• EdSchouten/bazel-buildbarn - Alternative buildfarm implementation written in Go
• BuildGrid - Alternative buildfarm implementation written in Python
• Asana/bazels3cache - Small web server for a Bazel cache that proxies to S3, allowing Bazel to work offline and has async uploads to make Bazel faster.

Project generators

Tools for generating WORKSPACE and BUILD files from source code.

• blakefiler.py - Generate a Makefile and tarball-able distribution using bazel query
• Lavender - Generate Visual Studio projects that uses Bazel for the actual building
• Jadep: Java Automated Dependencies - Generate BUILD files automatically for an existing Java project with class dependency analysis.
• BUILD File Generator - Similar tool for existing Java projects.
• Gazelle - BUILD file generator for Go projects.
• Pazel - Generate Bazel BUILD files for Python
• Tulsi for Xcode - A project generator for Xcode projects
• pinterest/xchammer - XCHammer generates Xcode projects from a Bazel Workspace
• create-bazel-workspace - Generate a new multi-language Bazel workspace with minimal configuration

Editors

• IntelliJ plugin (compatible with Android Studio and CLion)
• Eclipse plugin
• Vim plugin
• Emacs Support
  • codesuki/bazel-mode:
  • brown/bazel-mode
• VSCode
• bazelbuild/vscode-bazel
• PyCharm
• sconover/rules_intellij_generate - Plugin-less Bazel/IntelliJ integration

BUILD file tools

bazelbuild/buildtools contains:

• Buildifier - Prettifier for BUILD files
• Buildozer - Manipulate BUILD file contents from the command line
• unused_deps - Find unneeded dependencies in BUILD files

Migration

• bazelbuild/migration-tooling - Migrate an existing Maven project to Bazel.
• johnynek/bazel-deps - Generate bazel dependencies transitively for Maven artifacts, with scala support.
• rules_maven - Rules to define Maven dependencies
• bazelize-maven-plugin - Maven plugin for migration from Maven to Bazel
• bazelbuild/gmaven_rules - Transitive WORKSPACE rules for Google's Maven repository
• stripe/sbt-bazel - Easily convert SBT projects to Bazel workspaces

Resources

Designs

• bazelbuild/proposals - Index of all design documents and proposals for Bazel.
• Bazel's design process

Tutorials

Official

• Java
• C++
• Android
• iOS

Codelabs

• Building Android Apps with Bazel

Community

• Aspects: the fan-fic of build rules
• Real-world Bazel - BUILD files collected from public GitHub projects for reference and learning purposes.

Projects

A list of projects built with Bazel:

• bazelment/trunk: A collection of C++/Java OSS with BUILD files. e.g. grpc, guava, netty.
• tensorflow/tensorflow: Computation using data flow graphs for scalable machine learning.
• abseil/abseil-cpp - OSS collection of C++ code (compliant to C++11) designed to augment the C++ standard library.
• GoogleCloudPlatform/distroless - Language focused docker images, minus the operating system.
• google/subpar - Subpar is a utility for creating self-contained python executables. It is designed to work well with Bazel.
• alexeagle/angular-bazel-example: Building an Angular application with Bazel
  • ABC: Angular Buildtools Convergence https://g.co/ng/abc
• google/startup-os - Working examples of Google's Open Source tools and Cloud.
• lucperkins/colossus - An example microservice architecture for Kubernetes using Bazel, Go, Java, Docker, Kubernetes, Minikube, Gazelle, gRPC, Prometheus, Grafana, and more.

Articles

• Build mobile apps with Bazel. Part 2: iOS - Francois Stephany
• Build mobile apps with Bazel. Part 1: Android - Francois Stephany
• (In Japanese) Building C++ with Bazel / C++ビルド環境としてのBazel導入試行
• Nix + Bazel = fully reproducible, incremental builds
• Production Code Splitting With Bazel - Greg Magolan (Google)
• Build large polyglot projects with Bazel... now with Haskell support
• Managing a Go monorepo with Bazel - Filip Nikolovski (InPlayer)
• How to Create a Persistent Worker for Bazel - Mike Morearty (Asana)
• We Switched from Maven to Bazel and Builds Got 10x Faster - Jason Lunz (Redfin)
• Angular Bazel Build With Dev Server - Torgeir "Tor" Helgevold
• Bazel Conference 2017 - Justin Poehnelt
• What Angular is doing with Bazel and Closure
• Building Docker Images Without Docker
• Bazel Golang Hello World
• Migrating from Gradle to Bazel
• Benchmarking the Bazel build system on real-life C++
• Migrating Gypsum and CodeSwitch to Bazel - Jay Conrod (Google)

Videos

• ScalaSphere 2018: Using Bazel to build Scala - Andy Scott (Stripe)
• GopherChina 2018: Bazel build //:Go - Yuan He (流利说/liulishuo.com)
• How I love being ejected: Customizing your Angular build with Bazel - Greg Magolan (Angular team)
• SF Scala: Bazel - a Brief Overview - Ulf Adams (Google)
• Bazel for building Angular applications at Angular Lunch - Kyle Cordes
• Deep Dive of Google's Angular Build Toolchain - Alex Eagle (Google)
• Bazel Conference 2017 Opening Remarks - Helen Altshuler, John Field, Ulf Adams (Google)
• Bazel Remote Execution and Remote Caching w/ Two Sigma and Uber - Alpha Lam (Two Sigma), George Gensure (Uber)
• Tensorflow with Bazel — Lessons Learned - Gunhan Gulsoy (Google)
• Building Real-time Systems with Bazel w/ SpaceX - Matt Sachtler, Patrick Conrad (SpaceX)
• Hacks and Tips for Incremental Adoption of Bazel for iOS w/ Pinterest - Rahul Malik, Brandon Kase, Jerry Marino (Pinterest)
• Front End Development with Bazel: Angular/TypeScript and Persistent Workers w/ Asana - Mike Morearty (Asana), Alex Eagle (Google)
• Scala with Bazel w/ Wix, Stripe, Databricks - Ittai Zeidman (Wix), Oscar Boykin (Stripe), Ahir Reddy (DataBricks)
• Skylark: The Bazel Extensibility Language - Laurent Le Brun (Google)
• Using Bazel for Fast, Correct Docker Deployments w/ Databricks - Miles Yucht (Databricks), Matthew Moore (Google)
• Platforms and Toolchains in Bazel - John Cater (Google)
• Building Kubernetes [a Go binary] with Bazel - Jeff Grafton (Google)
• Integration testing with Bazel w/Dropbox - Benjamin Peterson (Dropbox)
• Bazel Conference 2017 playlist
• GothamGo 2017: A Go implementation of the Skylark Configuration Language - Alan Donovan (Google)
• Bazel: Google's Extensible, Multilingual, Scalable Build System DevTools@Scale2017 - Dmitry Lomov (Google)
• Building Go with Bazel at Golang UK Conference 2017 - Paul Bellamy
• Building Software At Google Scale - Ulf Adams, Helen Altshuler, David Stanke (Google)
• Bazel: Google's own build tool, now publicly available in Beta - Paul Johnston
• Bazel at FrOSCon - Klaus Aehlig (Google)
• Building Python with Bazel - Benjamin Peterson (Dropbox)
• Bazel at the Dart Developer Summit 2016 - Damien Martin-Guillerez (Google)

Slides

• Building Gerrit with Bazel at Gerrit User Conference 2016 - David Ostrovsky

Blogs

• Official Bazel Blog
• Kristina Chodorow's blogposts on Bazel

Community

• #bazelbuild on Slack
• BuildTeamWorld on Slack - A community slack for BuildFarm, BuildGrid, Bazel and general build teams.
• #bazel on Freenode
• Stack Overflow
• Bazel users mailing list
• Bazel developers mailing list

Misc

• Why Google Stores Billions of Lines of Code in a Single Repository (Video at @Scale 2015)