Support multiple WORKSPACES

[Vertexwahn]

I have a repository that contains multiple Bazel WORKSPACES: https://github.com/Vertexwahn/BazelDemos

I added also a Bazel Steward job to it: https://github.com/Vertexwahn/BazelDemos/blob/main/.github/workflows/bazel_steward.yml

It seems that Bazel Steward expects a WORKSPACE file in the root directory. But this repo has many WORKSPACE files.

Would be nice if Bazel Steward would scan for all WORKSPACES and update all of them.

[lukaszwawrzyk]

Hi! Thanks for using Bazel Steward! We already have a ticket for this: https://github.com/VirtusLab/bazel-steward/issues/40

As a current workaround, you can use the positional argument to Bazel Steward which stands for the workspace path (see https://virtuslab.github.io/bazel-steward/docs/configuration/command-line-arguments.html). You can use additional-args to pass this in GHA https://virtuslab.github.io/bazel-steward/docs/installation.html#detailed-usage.

You should be able to safely run the action multiple times for each workspace:

      - uses: actions/checkout@v2
          with:
            fetch-depth: 0
        - uses: VirtusLab/bazel-steward@v1
          with:
            additional-args: core_principles/bzlmod
        - uses: VirtusLab/bazel-steward@v1
          with:
            additional-args: core_principles/genrule
        - uses: VirtusLab/bazel-steward@v1
          with:
            additional-args: hello_world/csharp

You'd probably need to generate this list with a script, given how many workspaces you have. I guess this is still best workaround I can offer until the ticket is implemented.

[Vertexwahn]

I tried it this way (see also here):

name: Bazel Steward

on:
  workflow_dispatch:
  schedule:
    - cron: '30 5 * * *' # runs every day at 5:30 am

jobs:
  bazel-steward: # Seems not to work -> https://github.com/VirtusLab/bazel-steward/issues/290
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
        with:
          fetch-depth: 0
      - uses: VirtusLab/bazel-steward@latest
        with:
          additional-args: hello_world/latex

But I get this warning:

[main] WARN org.virtuslab.bazelsteward.app.App - Error details: Could not find workspace file in /home/runner/work/BazelDemos/BazelDemos

Local run via java -jar bazel-steward.jar hello_world/latex works.

[lukaszwawrzyk]

There were 2 bugs causing this. It seems to be working with v1.0.2: https://github.com/lukaszwawrzyk/BazelDemos/pulls

I suspect there may be branch clashes leading to undefined behavior when 2+ repositories have the same library to update. You could try to at least disable those who would conflict:

in .bazel-steward.yaml

update-rules:
  - kinds: bazel
    enabled: false
  - dependencies:
      - bazel-skylib
      - rules_scala
    enabled: false

In my example I disabled updating bazel itself, skylib and rules_scala, just as an example. Or you could limit number of projects that you use it with. It will help to try out Bazel Steward before we implement a proper support for multiworkspace repositories.

[Vertexwahn]

https://github.com/Vertexwahn/BazelDemos/pulls - looks nice

looking forward to proper support for multi workspace repositories ;)