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

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Message-ID: <6dbdf6e1c1639ae381ca9ab7041f84728ffa2267.1764062688.git.y.j3ms.n@gmail.com>
Date: Tue, 25 Nov 2025 09:32:59 +0000
From: Jesung Yang <y.j3ms.n@...il.com>
To: Miguel Ojeda <ojeda@...nel.org>
Cc: Boqun Feng <boqun.feng@...il.com>,
	Gary Guo <gary@...yguo.net>,
	Björn Roy Baron <bjorn3_gh@...tonmail.com>,
	Benno Lossin <lossin@...nel.org>,
	Andreas Hindborg <a.hindborg@...nel.org>,
	Alice Ryhl <aliceryhl@...gle.com>,
	Trevor Gross <tmgross@...ch.edu>,
	Danilo Krummrich <dakr@...nel.org>,
	rust-for-linux@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Jesung Yang <y.j3ms.n@...il.com>
Subject: [PATCH 1/2] rust: syn: make rust-analyzer treat `std` as a dependency

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@...il.com>
---
 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