rust-analyzer can't get data on rustc internals

[matthiaskrgr]

When using rust-analyzer on clippy for example, it seems to fail to get a lot of info on functions/types that come from rustc, for example:

#![feature(rustc_private)]
extern crate rustc_lint;

pub fn register_pre_expansion_lints(_store: &mut rustc_lint::LintStore) {}

fn main() {}

Hovering rustc_lint::LintStore did not provide any type information.

I tried the same with the clippy submodule inside the rustc-repo hoping that could solve it but to no avail.

[flodiebold]

I think rustc_lint comes from the sysroot here, right? But it isn't included in the rust-src component, so we don't have the source. You could try overriding the dependency in Cargo.toml with a path dependency that points to the source 🤔

[bjorn3]

The rustc crate is included in rust-src, but many other rustc private crates aren't.

[matthiaskrgr]

You could try overriding the dependency in Cargo.toml with a path dependency that points to the source thinking

[dependencies]
rustc_lint = { path = "/home/matthias/vcs/github/rust/src/librustc_lint"}

makes it work indeed! 👍