I tried to add a Jungle Exclusion Annotation in front of the Module Name in a Barrel, and it errored out in the compile.
So I just moved that Barrel Module into my DF source tree, and removed the Barrel Dependency.
Then, the DF compiled fine and avoided loading that module for the device I wanted to be excluded. Perfect. Saved a chunk of memory I wanted to avoid.
No big deal. I'll just stop using Barrels since I need to start avoiding some features so my DFs will work with these devices that have < 30kb of memory.
Too bad.. Barrels have potential.