Adds ability to resolve dependencies from a source file #1232

[binford2k]

This supersedes PR #1232 and updates the expected workflow to

1. Write Puppetfile.src that describes only the modules you intend to use.
2. Run r10k puppetfile resolve to resolve all dependencies of those modules.
3. Optional: review the generated Puppetfile for quality and security purposes.
4. Deploy.

[glennsarti]

Commenting here as I was summoned by a commit....

@binford2k The puppetfile resolver has a parser in it to convert text (puppetfile) into a document model. However you can absolutely create the document model in another way. I know that's how bolt does it. Rough psuedo code.

dom = new PuppetfileResolver::Puppetfile::Document
r10k.modules.each do |module|
   dom_module = new PuppetfileResolver::Puppetfile::ForgeModule(module.name)
   dom.add_module(dom_module)
end

resolver = new PuppetfileResolver.Resolver()
resolver.resolve(dom)

[glennsarti]

That said, my parser has magic-comment support as per - https://sarti.dev/puppetfile-resolver/parsers

[github-actions]

This PR has been marked stale because it has had no activity for 60 days. If you are still interested in getting this merged, please comment and we'll try to move it forward. Otherwise, it will be closed in 7 days.

[jhoblitt]

I think a lot of people would be interested in this functionality. Are there any plans to revive this PR?

[binford2k]

@jhoblitt I'd love to get it into core, but no luck yet. In the meantime, I recreated it as a standalone tool https://github.com/binford2k/r10k-resolve

[jhoblitt]

@binford2k hmm. I think something like a rake target that could be run under CI would be needed to make sure that the Puppetfile is update to date.