So if you are using Buildkite CI/CD now, chances are you might have heard of the awesome monorepo-diff-buildkite-plugin.
This plugin helps detect changes to filesystems then trigger specified pipelines. I have been using this plugin at work for months and realise it does not support linux-ppc64le agent. So here we go after a Pull Request, the support is in
https://github.com/chronotc/monorepo-diff-buildkite-plugin/releases/tag/v2.1.1