Is Bazel open-source?

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.

Why is Bazel needed?

Bazel may give you faster build times because it can recompile only the files that need to be recompiled. Similarly, it can skip re-running tests that it knows haven’t changed. Bazel produces deterministic results. This eliminates skew between incremental and clean builds, laptop and CI system, etc.

Is Bazel from Google?

Bazel is Google’s own build tool. Bazel has built-in support for building both client and server software, including client applications for both Android and iOS platforms. It also provides an extensible framework that you can use to develop your own build rules.

Is Bazel a Python?

Similar to build tools like Make, Apache Ant, or Apache Maven, Bazel builds software applications from source code using a set of rules. Rules and macros are created in the Starlark language (previously called Skylark), a dialect of Python.

Is Bazel fast?

Bazel is the common build tool throughout Pinterest and has been instrumental in achieving fast, reproducible builds across our programming languages and platforms. Bazel provides a seamless and consistent build interface for different languages in a single system.

Why is Bazel so hard?

The difficulty is mainly to do with the fact that, in Bazel, input files can either be source files and come from the source tree, or be generated inputs and come from Bazel’s output cache (also called bazel-bin ).

Why we should use Bazel for angular builds?

Remote execution of a Bazel build allows you to distribute build and test actions across multiple machines, such as a datacenter. This enables faster build and test execution by leveraging the scalability of cores for parallel execution and since this is done remotely, builds can be reused across the team.

Who is using Bazel?

Google. Bazel was designed to be able to scale to Google’s needs and meet Google’s requirements of reproducibility and platform/language support. All software at Google is built using Bazel. Google uses Bazel and its rules for millions of builds every day.

Is Bazel declarative?

Bazel does not have a high level declarative build language that makes the build easy to use for developers. At Google this can be compensated with a specialized service team that owns the build tool.

Is Bazel good for Python?

Installation. Bazel is one of the best solutions available for creating reproducible, hermetic builds. It supports many languages like Python, Java, C, C++, Go, and more.

Where is Bazel build?

The solution that’s currently implemented:

• Bazel must be invoked from a directory containing a WORKSPACE file (the “workspace directory”), or a subdirectory thereof.
• The outputRoot directory defaults to ~/.
• The Bazel user’s build state is located beneath outputRoot/_bazel_$USER .