Can I extend a CI Library in a Package?

[eluser]Drew J[/eluser]
My testing is telling me no; I'm wondering if anyone knows for sure.

I have some libraries I created in my shared Package (shared models, libraries, etc) and they load just fine. If I try a file like "MY_Encrypt.php" to extend the CI Encrypt Library; I don't appear to have access to the new functions in the loaded (and extended) library.

If I move that file (MY_Encrypt.php) to my /application/libraries folder, it works just fine.

Is this a bug, a known limitation or an unknown limitation?