On the first question -- auto imports is an example of a "heavy" functionality since we indeed need to scan more than is imported in the project, which is why I'm still working on this to optimize properly (it's decently fast, but I want it to be faster before I'll enable it, since it's also something we want to see in completions, and completions must be _very_ fast). Still, we don't need "everything": we only need _reachable_ items in _direct_ dependencies; typically project has much less direct dependencies than transitive ones (e.g. 20 direct dependencies can fan out to 1000 transitive deps), and each dependency usually has less exported items than total amount of items. Finally, for that you only need semantic data (e.g. items) rather than bodies. So while it's a big task (though finding references is still significantly bigger and tougher, because that's where it gets to "it can be anywhere in reverse dependencies bodies), it's not "we need the whole world".
As for the size -- the Rust Glancer artifacts for Rust Glancer itself currently take 225mb. And that's proportial to the project size only, e.g. it doesn't grow over time on its own.
As for the size -- the Rust Glancer artifacts for Rust Glancer itself currently take 225mb. And that's proportial to the project size only, e.g. it doesn't grow over time on its own.