Re: [PATCH v2] docs: rust: quick-start: update Ubuntu instructions

[Igor Korotin <igor.korotin@yahoo.com>]

On 4/2/25 12:26, Miguel Ojeda wrote:
> Also, weren't we going to mention `RUSTDOC`, `RUSTFMT` and `CLIPPY_DRIVER`?

While re-writing my changes I found out that while packages rustc, 
rustdoc and
rustfmt of version 1.80 in 22.04 and 24.04 at least create symbolic 
links to
their tools in /usr/bin/, rust-1.80-clippy does not do it. So the 
clippy-driver
is only accessible by its full path /usr/lib/rust-1.80/bin/clippy-driver.
I'm sure this quick-start.rst should be updated, because from my 
experience I know that it is painful for newcomer to configure Rust for 
kernel properly in Ubuntu 22.04/24.04. And to be honest, I see 
`PATH=/usr/lib/rust-1.80/bin:$PATH` the easiest solution. Rust packages 
in 22.04/24.04 are screwed. I checked 24.10/25.04 and these versions do 
not have such problems at all, it's just enough to use `apt rustc 
rustdoc rustfmt bindgen rust-clippy` to install rust 1.84 and bindgen 
0.71 and set `RUST_LIB_SRC` variable.

Best Regards
Igor