bazelbuild/bazel

FR: Mercurial equivalent of git_repository

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#26,065 opened on May 14, 2025

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P3help wantedteam-ExternalDepstype: feature request

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Description

Description of the feature request:

It would be great to have a repository rule for Mercurial repositories, similar to the git_repositoryrule.

Which category does this issue belong to?

External Dependency

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

This would allow us to create BCR modules for repositories that are hosted on Mercurial, such as gmp

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 ?

Have you found anything relevant by searching the web?

None. Such a rule does not yet exist.

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

No response

Contributor guide

Research direction
Study the implementation of the existing git repository rule in Bazel, understand how it fetches and caches Git repositories, and design a similar rule for Mercurial repositories using the Mercurial command line interface. Focus on the Starlark rule definition and the underlying repository fetcher logic.
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
BazelJavaMercurial
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
45