chore(lerna): downgrade lerna for now

[liamdebeasi]

Pull request checklist

Please check if your PR fulfills the following requirements:

• Tests for the changes have been added (for bug fixes / features)
• Docs have been reviewed and added / updated if needed (for bug fixes / features)
  • Some docs updates need to be made in the ionic-docs repo, in a separate PR. See the contributing guide for details.
• Build (npm run build) was run locally and any changes were pushed
• Lint (npm run lint) has passed locally and any fixes were made for failures

Pull request type

Please check the type of change your PR introduces:

• Bugfix
• Feature
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no api changes)
• Build related changes
• Documentation content changes
• Other (please describe):

What is the current behavior?

According to https://github.com/lerna/lerna/releases/tag/v5.0.0, we should be fine to upgrade to lerna v5. Our CI is not impacted by the Node version breaking changes, and we should be fine with the @npmcli/run-script changes (we make use of prepublishOnly, but that appears to still be part of the API).

What is the new behavior?

• There appear to be intermittent failures with the Ionic Angular Server package after these changes: https://github.com/ionic-team/ionic-framework/runs/6937044588?check_suite_focus=true

The error log is pretty minimal, so until I can dig more into this I am going to revert the Lerna change for now.

At first glance, it appears that Lerna 5 is running multiple builds in parallel, which is not what we need. Since Ionic angular server depends on Ionic angular, we need Ionic angular to build first. More investigation is needed.

We are possibly running into this bug: lerna/lerna#3146

Does this introduce a breaking change?

• Yes
• No

Other information

[JamesHenry]

Hi @liamdebeasi, I'm one of the new maintainers of Lerna via Nrwl - I'm sorry to see you had an issue that required you to downgrade.

Please can we work together to get you folks back on the latest version?

Maybe you could ping me on the Nrwl community slack so we can figure out some next steps: https://go.nrwl.io/join-slack