install rustc before the tools

Signed-off-by: onur-ozkan <work@onurozkan.dev>

Author: onur-ozkan

src/bootstrap/src/core/build_steps/dist.rs

@@ -398,10 +398,11 @@ impl Step for Rustc {
             let host = compiler.host;
             let src = builder.sysroot(compiler);
 
-            // Copy rustc/rustdoc binaries
+            // Copy rustc binary
             t!(fs::create_dir_all(image.join("bin")));
             builder.cp_r(&src.join("bin"), &image.join("bin"));
 
+            // If enabled, copy rustdoc binary
             if builder
                 .config
                 .tools

src/bootstrap/src/core/builder.rs

@@ -858,6 +858,11 @@ impl<'a> Builder<'a> {
             Kind::Install => describe!(
                 install::Docs,
                 install::Std,
+                // During the Rust compiler (rustc) installation process, we copy the entire sysroot binary
+                // path (build/host/stage2/bin). Since the building tools also make their copy in the sysroot
+                // binary path, we must install rustc before the tools. Otherwise, the rust-installer will
+                // install the same binaries twice for each tool, leaving backup files (*.old) as a result.
+                install::Rustc,
                 install::Cargo,
                 install::RustAnalyzer,
                 install::Rustfmt,
@@ -866,7 +871,6 @@ impl<'a> Builder<'a> {
                 install::Miri,
                 install::LlvmTools,
                 install::Src,
-                install::Rustc,
             ),
             Kind::Run => describe!(
                 run::ExpandYamlAnchors,