It's difficult to determine what package was staged for a given droplet (without parsing URLs)

[Gerg]

The droplet resource has link to its package, but there isn't an easy way to recover the package guid (other than parsing it from the link). For example, the package guid would be useful if you want to rebuild a droplet.

{
   "guid": "64b6c98e-1e20-4056-a444-395241b4f7d5",
   "state": "STAGED",
   "...": "...",
   "links": {
      "...": "...",
      "package": {
         "href": "https://api.moor-swisher.lite.cli.fun/v3/packages/e0cb69a6-663f-4e73-8529-ef660f644c61"
      }
   }
}

Possible enhancements:

1. Adding a package field to droplets, similar to the package field on builds
2. Adding a droplet_guids filter to builds. You could then filter builds on the droplet guid, and trace it back to the package.

Relevant slack discussion: https://cloudfoundry.slack.com/archives/CCRLX88DD/p1578522987041800

[cf-gitbot]

We have created an issue in Pivotal Tracker to manage this:

https://www.pivotaltracker.com/story/show/170630931

The labels on this github issue will be updated when the story is started.