8214: Mention the rustup version in the manual r=lnicola a=lnicola

Closes #7860

bors r+

changelog fix mention the `rustup` version in the installation instructions.

Co-authored-by: Laurențiu Nicola <lnicola@dend.ro>
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bors[bot] 2021-03-27 10:40:25 +00:00 committed by GitHub
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@ -178,6 +178,15 @@ $ cargo xtask install --server
If your editor can't find the binary even though the binary is on your `$PATH`, the likely explanation is that it doesn't see the same `$PATH` as the shell, see https://github.com/rust-analyzer/rust-analyzer/issues/1811[this issue].
On Unix, running the editor from a shell or changing the `.desktop` file to set the environment should help.
==== `rustup`
`rust-analyzer` is available in `rustup`, but only in the nightly toolchain:
[source,bash]
---
$ rustup +nightly component add rust-analyzer-preview
---
==== Arch Linux
The `rust-analyzer` binary can be installed from the repos or AUR (Arch User Repository):