From 670606915eb5985352f64e8b7c5363c15a66efc6 Mon Sep 17 00:00:00 2001
From: Fabian Wolff <fwolff@google.com>
Date: Thu, 5 Mar 2026 12:08:11 +0000
Subject: [PATCH] Add `-Z unstable-options` to `rustc` invocation to make
 `--target` work

---
 crates/project-model/src/toolchain_info/rustc_cfg.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/crates/project-model/src/toolchain_info/rustc_cfg.rs b/crates/project-model/src/toolchain_info/rustc_cfg.rs
index ab69c8e0e4a5..8ab7900c94f3 100644
--- a/crates/project-model/src/toolchain_info/rustc_cfg.rs
+++ b/crates/project-model/src/toolchain_info/rustc_cfg.rs
@@ -87,7 +87,7 @@ fn rustc_print_cfg(
     };
 
     let mut cmd = sysroot.tool(Tool::Rustc, current_dir, extra_env);
-    cmd.args(RUSTC_ARGS);
+    cmd.args(["-Z", "unstable-options"]).args(RUSTC_ARGS);
     cmd.arg("-O");
     if let Some(target) = target {
         cmd.args(["--target", target]);