Vscode-rust: GoTo Definition for items in the standard library fails, probably looking in wrong place for source

[PhilipDaniels]

When I press F12 GoTo Definition on standard library functions I either get "No definition found for foo"

or a file not found error

It is not predictable as to which I get - you always get the same error for a particular function, but there is no way of predicting which one. Note the path is wrong in the gif, I actually have the source installed here:

C:\Users\Phil\.rustup\toolchains\stable-x86_64-pc-windows-msvc\lib\rustlib\src\rust\src

Expectation: Should find the appropriate rust-src and take me there.

OS               : Windows 10
VS Code          : 1.19.3
rls plugin       : 0.3.2
cargo --version  : cargo 0.24.0 (45043115c 2017-12-05)
rustup --version : rustup 1.10.0 (c6a8f7c60 2018-01-25)
rustup show      : stable-x86_64-pc-windows-msvc (default)
rls --version    : prints "error: toolchain 'stable-x86_64-pc-windows-msvc' does not have the binary `rls.exe`"
    I do have another rls.exe at C:\Users\Phil\.rustup\toolchains\nightly-x86_64-pc-windows-msvc\bin\rls.exe
    I am not sure which one the plugin is using.

Everything was installed via rustup and cargo.

Possibly related issue: https://github.com/rust-lang-nursery/rls-vscode/issues/185 But that is talking about it always failing. For me, GoTo Definition works OK for my own source and for source in crates I am using. It's just the std stuff that doesn't work.

[statpro-awebb]

After an recent rustup update to nightly, go-to-def now _only_ works on my own source. It doesn't work for std, nor for crates I use.

[nrc]

Not jumping into std is a known issue, but not jumping to dep crates is a new bug

[KaneGreen]

I am using stable-msvc, and my vscode tried to find src in file:///c:/Program Files/Microsoft VS Code/src/libstd/io/mod.rs.
Even though I've set env RUST_SRC_PATH=C:\Users\KaneGreen\.rustup\toolchains\stable-x86_64-pc-windows-msvc\lib\rustlib\src\rust\src

[PhilipDaniels]

Probably related issue in RLS: https://github.com/rust-lang-nursery/rls/issues/227

[uudashr]

Any progress?

[uudashr]

FYI use this config

{
    "rust-client.channel": "nightly"
}

Then reload window, should works.
Somehow the stable channel are buggy, and not catching up with the fixes on the nightly.

[dvic]

@nrc This seems to be broken again for me (even with nightly): https://github.com/rust-lang-nursery/rls-vscode/issues/391

Given the fact I also have the problem with atom https://github.com/rust-lang-nursery/atom-ide-rust/issues/96, it might be a regression in RLS?

Can anyone confirm whether or not the extension works for std and external crates? Thanks

[dvic]

By the way: it's not just GoTo Definition, also type information etc. is currently not working for me outside the current crate.

[nrc]

Yeah, currently you can jump to def into an external crate, but once there you don't get any further help from the RLS (this is a client problem, but is a bit hard to fix and affects multiple clients).