Bootstrap in CI often hangs indefinitely

[JulienLHPro]

Hi!

We are using Melos in our project and we have quite a few packages to bootstrap (110). On local machines everything works great, but as soon as we use CI machines, the boostrap command does not complete, like 3 times out of 5.

That's really all, it just doesn't complete, it hangs forever on the last package, without any log being produced. This is why I did not open an issue, I have no exception to show...

We have fourteen self-hosted runners and we could not see any correlation or pattern in the way the script fails.

Our melos.yaml file is simple:

  - applications/*
  - packages/*

ide:
  intellij:
    enabled: true

Our Github action workflow looks like this:

name: Analyze on dev PR

on:
  pull_request:
    branches: ["master", "dev"]

jobs:
  analyze:
    timeout-minutes: 15
    runs-on: [self-hosted, dart]

    steps:
      - uses: actions/checkout@v4
      - uses: dcarbone/[email protected]
      - uses: subosito/[email protected]
        with:
          flutter-version: "3.27.1"

      - name: Install melos
        run: dart pub global activate melos

      - name: Fetch dev branch
        run: git fetch origin dev

      - name: Fetch HEAD branch
        run: git fetch origin $GITHUB_HEAD_REF

      - name: Bootstrap
        run: melos bootstrap runPubGetInParallel=false

What I've tried:

• Deactivating the IntelliJ files generation
• runPubGetInParallel=false
• Using the Melos Github action
• --verbose

Any help would be extremely welcome because our entire CI is compromised right now.

Thanks for reading this!

[spydon]

That's odd, but good news, bootstrap will barely be needed anymore (and will be a lot more lightweight) after Melos v7.0.0 is out since we're utilizing pub workspaces now. I will release v7.0.0-dev.3 later today, if you want you can migrate to that (the migration is pretty quick). I wouldn't recommend migrating to v7.0.0-dev.2 which is the one that is out now, because there are some breaking changes to the version I'll release later.

[JulienLHPro]

I'll definitely give it a try, it would be such a relief to have a fix, thank you!

[spydon]

7.0.0-dev.3 is now out, and there are migration instructions in the readme (and in the docs).