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Bazel

216
421
+ 1
119
Pants

20
67
+ 1
30
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Bazel vs Pants: What are the differences?

Developers describe Bazel as "Correct, reproducible, fast builds for everyone". Bazel is a build tool that builds code quickly and reliably. It is used to build the majority of Google's software, and thus it has been designed to handle build problems present in Google's development environment. On the other hand, Pants is detailed as "Build system by Twitter, Foursquare, and Square". Pants is a build system for Java, Scala and Python. It works particularly well for a source code repository that contains many distinct projects.

Bazel and Pants can be primarily classified as "Java Build" tools.

Some of the features offered by Bazel are:

  • Multi-language support: Bazel supports Java, Objective-C and C++ out of the box, and can be extended to support arbitrary programming languages.
  • High-level build language: Projects are described in the BUILD language, a concise text format that describes a project as sets of small interconnected libraries, binaries and tests. By contrast, with tools like Make you have to describe individual files and compiler invocations.
  • Multi-platform support: The same tool and the same BUILD files can be used to build software for different architectures, and even different platforms. At Google, we use Bazel to build both server applications running on systems in our data centers and client apps running on mobile phones.

On the other hand, Pants provides the following key features:

  • Builds Java, Scala, and Python.
  • Adding support for new languages is straightforward.
  • Supports code generation: thrift, protocol buffers, custom code generators.

"Fast" is the top reason why over 18 developers like Bazel, while over 5 developers mention "Creates deployable packages" as the leading cause for choosing Pants.

Bazel and Pants are both open source tools. It seems that Bazel with 12.2K GitHub stars and 2K forks on GitHub has more adoption than Pants with 1.15K GitHub stars and 328 GitHub forks.

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Pros of Bazel
Pros of Pants
  • 26
    Fast
  • 18
    Deterministic incremental builds
  • 15
    Correct
  • 13
    Enforces declared inputs/outputs
  • 13
    Multi-language
  • 9
    High-level build language
  • 8
    Scalable
  • 5
    Multi-platform support
  • 4
    Sandboxing
  • 3
    Dependency management
  • 2
    Flexible
  • 2
    Windows Support
  • 1
    Android Studio integration
  • 6
    Creates deployable packages
  • 4
    Runs on Linux
  • 4
    Runs on OS X
  • 4
    BUILD files
  • 4
    Runs tests
  • 4
    Scales
  • 2
    Flexibility
  • 2
    Extensible

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Cons of Bazel
Cons of Pants
  • 3
    No Windows Support
  • 2
    Bad IntelliJ support
  • 1
    Poor windows support for some languages
  • 1
    Constant breaking changes
  • 1
    Learning Curve
  • 1
    Lack of Documentation
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    What is Bazel?

    Bazel is a build tool that builds code quickly and reliably. It is used to build the majority of Google's software, and thus it has been designed to handle build problems present in Google's development environment.

    What is Pants?

    Pants is a build system for Java, Scala and Python. It works particularly well for a source code repository that contains many distinct projects.

    Need advice about which tool to choose?Ask the StackShare community!

    What companies use Bazel?
    What companies use Pants?
    See which teams inside your own company are using Bazel or Pants.
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    What tools integrate with Bazel?
    What tools integrate with Pants?
      No integrations found

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      Mar 24 2021 at 12:57PM

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