A feature request regarding extensions (from @termi-official).

Being able to write:

[extensions]
ExtBase = [...]
ExtAdvanced = ["ExtBase", ...]

which would cause ExtAdvanced to be loaded if ExtBase (and the rest of the weak deps dependencies for it) are loaded. You should then be able to get a handle to ExtBase inside ExtAdvanced. This is so you can extend methods in the parent for types defined inside ExtBase.