Rustup: Installing sources

Hi,
is there a possibility to install rust sources with rustup including setting the environment variable?
I need this for racer (auto completation)

Not at the moment, but this is actively being worked on:

https://github.com/rust-lang/rust/pull/34366
https://github.com/rust-lang/rfcs/pull/1133

And I really need this for IntelliJ Rust as well :slight_smile:

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