bazelbuild/bazel

Detect changes in local file registries

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#25,528 opened on Mar 11, 2025

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 (7 comments) (2 reactions) (0 assignees)Java (25,384 stars) (4,465 forks)batch import
P3help wantedteam-ExternalDepstype: feature request

Description

Description of the feature request:

I was adding a module to BCR and testing it out locally with --resistry file:///home/.... and got an error due to a mismatched sha256. Correcting the error in my local registry and re-running bazel build still reported the same error. I had to bazel clean in order to refresh the registry.

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 ?

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

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.
4
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
3-5 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
Bazel build system knowledge
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
20
Research direction
Investigate Bazel's current mechanism for detecting changes in local file registries. Look into how the registry flag is handled and why it doesn't detect SHA256 modifications without a clean. Consider implementing file system watching or checksum comparison to update cache. Review related code in the external dependency resolution module.
Detect changes in local file registries · bazelbuild/bazel#25528 | Good First Issue