Re: [PATCH 1/2] rust: syn: make rust-analyzer treat `std` as a dependency

[Tamir Duberstein]

On Tue, Nov 25, 2025 at 4:38 AM Jesung Yang <y.j3ms.n@xxxxxxxxx> wrote:
>
> Fix the `generate_rust_analyzer.py` script to ensure that the
> `rust-project.json` it produces includes `std` in the `deps` field for
> the `syn` crate.
>
> `syn` directly references items from `std`, so rust-analyzer should
> treat it as a dependency to provide correct IDE support.
>
> For example, `syn::Punctuated` contains fields of type `Vec<..>` and
> `Option<..>`, both of which come from the standard library prelude.
> With `std` listed in the `deps` field, rust-analyzer can infer the types
> of these fields instead of showing `{unknown}`.
>
> Verified the explicit uses of `std` using:
>
>     grep -rn 'std::' rust/syn/
>
> Fixes: 737401751ace ("rust: syn: enable support in kbuild")
> Signed-off-by: Jesung Yang <y.j3ms.n@xxxxxxxxx>

Reviewed-by: Tamir Duberstein <tamird@xxxxxxxxx>
Tested-by: Tamir Duberstein <tamird@xxxxxxxxx>

> ---
>  scripts/generate_rust_analyzer.py | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/scripts/generate_rust_analyzer.py b/scripts/generate_rust_analyzer.py
> index 147d0cc94068..3b169904ee41 100755
> --- a/scripts/generate_rust_analyzer.py
> +++ b/scripts/generate_rust_analyzer.py
> @@ -103,7 +103,7 @@ def generate_crates(srctree, objtree, sysroot_src, external_src, cfgs, core_edit
>      append_crate(
>          "syn",
>          srctree / "rust" / "syn" / "lib.rs",
> -        ["proc_macro", "proc_macro2", "quote"],
> +        ["std", "proc_macro", "proc_macro2", "quote"],
>          cfg=crates_cfgs["syn"],
>      )
>
>
> base-commit: 54e3eae855629702c566bd2e130d9f40e7f35bde
> --
> 2.47.3
>
>