PrunePackageReference (fka Supplied by platform) design

[nkolev92]

https://github.com/NuGet/Home/blob/dev/accepted/2024/prune-package-reference.md

[dsplaisted]

It doesn't look like the spec explicitly states whether pruned packages will be downloaded at all. It would be good to explicitly never download pruned packages. Some vulnerability scanners look at the global packages folder, so this would ensure that those scanners wouldn't have false positives for pruned packages.

[nkolev92]

It doesn't look like the spec explicitly states whether pruned packages will be downloaded at all. It would be good to explicitly never download pruned packages. Some vulnerability scanners look at the global packages folder, so this would ensure that those scanners wouldn't have false positives for pruned packages.

Apparently I only had that in the summary.

This helps avoid downloading unnecessary reference and implementation packages

I'll add that explicitly in the rest of the spec as well.

[nkolev92]

Pushed some more changes to the spec based on the feedback.
There is a limitation with transitive shared frameworks. Not sure if we have an automatic solution for that.

[nkolev92]

This spec has been reviewed and now all the unresolved questions are closed.

@NuGet/nuget-client Can I get another look so I can merge this.
I'm starting to PR the implementation and I want to merge the spec before that.