linux-kernel - Re: [PATCH v2 7/7] scripts: generate_rust

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Message-ID: <m25xkeysk6.fsf@kloenk.dev>
Date: Wed, 12 Mar 2025 20:09:29 +0100
From: Fiona Behrens <me@...enk.dev>
To: Tamir Duberstein <tamird@...il.com>
Cc: Miguel Ojeda <ojeda@...nel.org>,  Alex Gaynor <alex.gaynor@...il.com>,
  Boqun Feng <boqun.feng@...il.com>,  Gary Guo <gary@...yguo.net>,
  Björn
 Roy Baron <bjorn3_gh@...tonmail.com>,  Benno Lossin
 <benno.lossin@...ton.me>,  Andreas Hindborg <a.hindborg@...nel.org>,
  Alice Ryhl <aliceryhl@...gle.com>,  Trevor Gross <tmgross@...ch.edu>,
  Danilo Krummrich <dakr@...nel.org>,  Boris-Chengbiao Zhou
 <bobo1239@....de>,  Kees Cook <kees@...nel.org>,
  rust-for-linux@...r.kernel.org,  linux-kernel@...r.kernel.org,  Lukas
 Wirth <lukas.wirth@...rous-systems.com>
Subject: Re: [PATCH v2 7/7] scripts: generate_rust_analyzer.py: define host
 crates

Tamir Duberstein <tamird@...il.com> writes:

> Define host crates used by the `macros` crate separately from target
> crates, now that we can uniquely identify crates with the same name.
>
> This avoids rust-analyzer thinking the host `core` crate has our target
> configs applied to it.
>
> Suggested-by: Miguel Ojeda <ojeda@...nel.org>
> Link: https://lore.kernel.org/all/CANiq72mw83RmLYeFFoJW6mUUygoyiA_f1ievSC2pmBESsQew+w@mail.gmail.com/
> Signed-off-by: Tamir Duberstein <tamird@...il.com>

Reviewed-by: Fiona Behrens <me@...enk.dev>

> ---
>  scripts/generate_rust_analyzer.py | 10 ++++++----
>  1 file changed, 6 insertions(+), 4 deletions(-)
>
> diff --git a/scripts/generate_rust_analyzer.py b/scripts/generate_rust_analyzer.py
> index e1002867735b..4832a4901c94 100755
> --- a/scripts/generate_rust_analyzer.py
> +++ b/scripts/generate_rust_analyzer.py
> @@ -128,10 +128,12 @@ def generate_crates(
>      # NB: sysroot crates reexport items from one another so setting up our transitive dependencies
>      # here is important for ensuring that rust-analyzer can resolve symbols. The sources of truth
>      # for this dependency graph are `(sysroot_src / crate / "Cargo.toml" for crate in crates)`.
> +    host_core = append_sysroot_crate("core", [])
> +    host_alloc = append_sysroot_crate("alloc", [host_core])
> +    host_std = append_sysroot_crate("std", [host_alloc, host_core])
> +    host_proc_macro = append_sysroot_crate("proc_macro", [host_core, host_std])
> +
>      core = append_sysroot_crate("core", [], cfg=crates_cfgs.get("core", []))
> -    alloc = append_sysroot_crate("alloc", [core])
> -    std = append_sysroot_crate("std", [alloc, core])
> -    proc_macro = append_sysroot_crate("proc_macro", [core, std])
>  
>      compiler_builtins = append_crate(
>          "compiler_builtins",
> @@ -142,7 +144,7 @@ def generate_crates(
>      macros = append_proc_macro_crate(
>          "macros",
>          srctree / "rust" / "macros" / "lib.rs",
> -        [std, proc_macro],
> +        [host_std, host_proc_macro],
>      )
>  
>      build_error = append_crate(