patches/rules_rs_windows_msvc_linker.patch

# What: use Rust's bundled direct linker for Windows x86_64 and ARM64 MSVC toolchains.
# Scope: standard and bootstrap rules_rs Rust toolchains targeting x86_64 and ARM64 MSVC.

diff --git a/rs/toolchains/declare_rustc_toolchains.bzl b/rs/toolchains/declare_rustc_toolchains.bzl
--- a/rs/toolchains/declare_rustc_toolchains.bzl
+++ b/rs/toolchains/declare_rustc_toolchains.bzl
@@ -88,6 +88,8 @@ def declare_rustc_toolchains(
             llvm_cov = "@llvm//tools:llvm-cov",
             llvm_profdata = "@llvm//tools:llvm-profdata",
             linker = select({
+                "@rules_rs//rs/platforms/config:aarch64-pc-windows-msvc": "{}rust-lld".format(rustc_repo_label),
+                "@rules_rs//rs/platforms/config:x86_64-pc-windows-msvc": "{}rust-lld".format(rustc_repo_label),
                 "@platforms//cpu:wasm32": "{}rust-lld".format(rustc_repo_label),
                 "@platforms//cpu:wasm64": "{}rust-lld".format(rustc_repo_label),
                 "//conditions:default": None,