bazelbuild/bazel

Add support for .tar.br to http_archive

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#21,210 opened on Feb 6, 2024

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P2help wantedteam-ExternalDepstype: feature request

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Description

Description of the feature request:

I've got a bunch of large, compressible archives for input dependencies to our build. These take a long time to decompress as part of the loading phase.

https://github.com/google/brotli trades off decompression speed for compression time in a way which is quite interesting. Archives are compressed once, and read by a bunch of clients. https://www.opencpu.org/posts/brotli-benchmarks/ has some benchmarks.

I'd love to be able to pull in dependencies as .tar.br files and get the improved decompression times.

Which category does this issue belong to?

External Dependency

What underlying problem are you trying to solve with this feature?

No response

Which operating system are you running Bazel on?

No response

What is the output of bazel info release?

No response

If bazel info release returns development version or (@non-git), tell us how you built Bazel.

No response

What's the output of git remote get-url origin; git rev-parse HEAD ?

No response

Have you found anything relevant by searching the web?

No response

Any other information, logs, or outputs that you want to share?

No response

Contributor guide

Research direction
Examine the existing implementation of http archive and its handling of compressed archives. Add support for Brotli decompression by implementing a new decompressor similar to existing ones for gzip and bzip2.
Tech stack
java
Domain
build system
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-2 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
GitJava
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
65