From f492b257e79b44b8544ca1d05b79435c01b9f422 Mon Sep 17 00:00:00 2001
From: Benjamin Bouvier <public@benj.me>
Date: Thu, 11 Feb 2021 17:45:54 +0100
Subject: [PATCH] dist: include src/build_helper as part of the crate graph for
 rustc-dev.

Since it was missing, it wasn't possible to really use rustc-dev to
build, see for instance: https://github.com/rust-analyzer/rust-analyzer/issues/7589.
---
 src/bootstrap/dist.rs | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/bootstrap/dist.rs b/src/bootstrap/dist.rs
index af9c0fb04bc..3ebfdb24879 100644
--- a/src/bootstrap/dist.rs
+++ b/src/bootstrap/dist.rs
@@ -645,6 +645,14 @@ fn run(self, builder: &Builder<'_>) -> Option<GeneratedTarball> {
             &[],
             &tarball.image_dir().join("lib/rustlib/rustc-src/rust"),
         );
+        // This particular crate is used as a build dependency of the above.
+        copy_src_dirs(
+            builder,
+            &builder.src,
+            &["src/build_helper"],
+            &[],
+            &tarball.image_dir().join("lib/rustlib/rustc-src/rust"),
+        );
         for file in src_files {
             tarball.add_file(builder.src.join(file), "lib/rustlib/rustc-src/rust", 0o644);
         }