Publish to BCR

A GitHub app that mirrors releases of your Bazel ruleset to the Bazel Central Registry.

Prerequisites

Prepare your ruleset for bzlmod by following the Bzlmod User Guide.

How it works

Configure the app for:
- Your ruleset repository.
- A fork of bazelbuild/bazel-central-registry. The fork can be in the same GitHub account as your ruleset or in the release author's personal account.
Note: Authors of rulesets under the bazelbuild org should add the app to their personal fork of bazelbuild/bazel-central-registry.
Include these template files in your ruleset repository.
Cut a release. You will be tagged in a pull request against the BCR.

A note on release automation

Publish to BCR uses information about the GitHub author of a release in order to tag that author in the commit, push an entry to their BCR fork, or send error notifications. If you use a GitHub action to automate your release and the author is the github-actions bot (likely because you used the GITHUB_TOKEN secret to authorize the action), then the app won't know who cut the release and may not function properly.

You can work around this by setting a fixed releaser.

Publishing multiple modules in the same repo

You can publish BCR entries for multiple modules that exist in your git repository by configuring moduleRoots.

Including patches

Include patches in the BCR entry by adding them under .bcr/patches in your ruleset repository. All patches must have the .patch extension and be in the -p1 format.

For example, a patch in .bcr/patches/remove_dev_deps.patch will be included in the entry's pull request and will be referenced in the corresponding source.json file:

{
    ...
    "patch_strip": 0,
    "patches": {
        "remove_dev_deps.patch": "sha256-DXvBJbXZWf3hITOIjeJbgER6UOXIB6ogpgullT+oP4k="
    }
}

To patch in a submodule, add the patch to a patches folder under the submodule path .bcr/[sub/module]/patches where sub/module is the path to the WORKSPACE folder relative to the repository root.

Reporting issues

Create an issue in this repository for support.