From 0cd24c14c5269632f9c86ed74519afd07655fd8e Mon Sep 17 00:00:00 2001
From: Jonas Schievink <jonasschievink@gmail.com>
Date: Mon, 4 Oct 2021 18:22:39 +0200
Subject: [PATCH] Only add `proc_macro` to prelude in proc-macro crates

---
 crates/project_model/src/workspace.rs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/crates/project_model/src/workspace.rs b/crates/project_model/src/workspace.rs
index 714e2dd301da..cb79ce08bad6 100644
--- a/crates/project_model/src/workspace.rs
+++ b/crates/project_model/src/workspace.rs
@@ -563,11 +563,12 @@ fn cargo_to_crate_graph(
                     pkg_to_lib_crate.insert(pkg, crate_id);
                 }
                 if let Some(proc_macro) = libproc_macro {
-                    add_dep(
+                    add_dep_with_prelude(
                         &mut crate_graph,
                         crate_id,
                         CrateName::new("proc_macro").unwrap(),
                         proc_macro,
+                        cargo[tgt].is_proc_macro,
                     );
                 }