This is kinda meta but is there some way to track what workflows have pulled what versions of a module?

Do you mean something like this: https://github.com/nf-core/rnaseq/blob/master/modules.json ? Each workflow has a modules.json that keeps record of the git commit sha of each module, the CI and tooling checks for any upstream updates or changes made to the code in the workflow and flags it

I mean the reverse: Is there a way I can look at the star/align module and see which workflows are using it?

ah, partially yes each module has a list on the website. I don't think there is a record on the website right now wwhich git commit sha each of these pipelines is using

Is that automatically created somehow? I'm mostly looking at this from a non-nf-core perspective: We're using the toolchain in our own local modules repo, and want to see a list of the "these workflow need updating when the upstream module is updated."

I believe so, but @mashehu for clarification on how and where and when