Let's say I have an index view with this kind of hierarchy...

gistfile1.txt

= render sidebar #no caching
= render partial:patrol, collection:@patrols #has a cache key for patrol
  = render partial:users, collection:patrol.users #has a cache key for user

rake output

rake cache_digests:nested_dependencies TEMPLATE=manage/manage/index
[
  "manage/manage/sidebar", #Didn't expect this because I don't cache it (yet)
  {
    "manage/manage/users": [
      {
        "manage/manage/patrol": [ #Expected this
          "manage/manage/user", #Expected this
          "manage/manage/add_new_member" #Expected this
        ]
      },
      "manage/manage/add_new_member" #Expected this
    ]
  }
]

I sort of expected it to only list the dependencies for which I had set up cacheing, rather than all the dependencies it could figure out. 

Ah, I see. Yeah, there's no way of doing that. This just shows the nested dependencies between templates. That's by design. Feel free to see if you can improve the message, though.